Q: Is 1,209,390 a Composite Number?

Why is 1,209,390 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 1,209,390 can be evenly divided by 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 443 455 546 886 910 1,329 1,365 2,215 2,658 2,730 3,101 4,430 5,759 6,202 6,645 9,303 11,518 13,290 15,505 17,277 18,606 28,795 31,010 34,554 40,313 46,515 57,590 80,626 86,385 93,030 120,939 172,770 201,565 241,878 403,130 604,695 and 1,209,390, with no remainder.

Since 1,209,390 cannot be divided by just 1 and 1,209,390, 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).