It's about 650,000,000 times as heavy as a Grain of Sugar
In other words, 0.000000420 megatonnes is 672,000,000 times the weight of a Grain of Sugar, and the weight of a Grain of Sugar is 0.000000001490 times that amount.(a.k.a. white sugar, a.k.a. white refined sugar, a.k.a. table sugar, a.k.a. sucrose, a.k.a. saccharose)
A grain of sugar weighs approximately 0.0000000000000006250 megatonnes. Sugar consumption varies widely by country; the average citizen of the United States consumes about 0.00000006120 megatonnes of sugar each year.
It's about 1,500,000,000 times as heavy as a Poppy Seed
In other words, the weight of a Poppy Seed is 0.000000000710 times 0.000000420 megatonnes.(Papaver somniferum)
Fifty percent oil by weight, a poppy seed weighs approximately 0.000000000000000300 megatonnes. The true pigment of a poppy seed is brown in color, while the characteristic bluish color is an optical illusion caused by a layer of calcium oxalate crystals refracting light rays.
It's about 7,000,000,000 times as heavy as a Grain of Salt
In other words, 0.000000420 megatonnes is 7,180,000,000 times the weight of a Grain of Salt, and the weight of a Grain of Salt is 0.0000000001390 times that amount.The mass of a grain of salt is approximately 0.00000000000000005850 megatonnes. Salt consumption varies widely by country; the people of the United States consume a combined total of about 0.057 megatonnes of salt each year.
It's about 0.0000000000000000000000000002 times as heavy as The Sun
In other words, 0.000000420 megatonnes is 0.000000000000000000000000000210 times the weight of The Sun, and the weight of The Sun is 4,800,000,000,000,000,503,584,915,456.000000000000000000000000000000 times that amount.The sun has a mass of 1,999,999,999,999,999,966,445,568.000000000000000000000000000 megatonnes which represents 99.9% of the solar system's total mass. 98.7% of the sun's mass consists of hydrogen and helium — respectively the lightest and second-lightest elements in the universe.
It's about 0.00000000000000000000007 times as heavy as The Earth
In other words, 0.000000420 megatonnes is 0.0000000000000000000000703090 times the weight of The Earth, and the weight of The Earth is 14,223,000,000,000,000,262,144.0000000000000000000000000000 times that amount.The mass of the planet Earth is 5,973,600,000,000,000.000000000000000000000 megatonnes. The element iron makes up about 32% of that mass, or 1,917,500,000,000,000.000000000000000000000 megatonnes.