Q: Is 21,128,442 a Composite Number?

Why is 21,128,442 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 21,128,442 can be evenly divided by 1 2 3 6 443 886 1,329 2,658 7,949 15,898 23,847 47,694 3,521,407 7,042,814 10,564,221 and 21,128,442, with no remainder.

Since 21,128,442 cannot be divided by just 1 and 21,128,442, 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).