Q: Is 1,421,420 a Composite Number?

Why is 1,421,420 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 1,421,420 can be evenly divided by 1 2 4 5 7 10 11 13 14 20 22 26 28 35 44 52 55 65 70 71 77 91 110 130 140 142 143 154 182 220 260 284 286 308 355 364 385 455 497 572 710 715 770 781 910 923 994 1,001 1,420 1,430 1,540 1,562 1,820 1,846 1,988 2,002 2,485 2,860 3,124 3,692 3,905 4,004 4,615 4,970 5,005 5,467 6,461 7,810 9,230 9,940 10,010 10,153 10,934 12,922 15,620 18,460 20,020 20,306 21,868 25,844 27,335 32,305 40,612 50,765 54,670 64,610 71,071 101,530 109,340 129,220 142,142 203,060 284,284 355,355 710,710 and 1,421,420, with no remainder.

Since 1,421,420 cannot be divided by just 1 and 1,421,420, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).