Q: Is 4,121,145 a Composite Number?

Why is 4,121,145 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 4,121,145 can be evenly divided by 1 3 5 7 9 15 21 27 35 45 49 63 89 105 135 147 189 245 267 315 343 441 445 623 735 801 945 1,029 1,323 1,335 1,715 1,869 2,205 2,403 3,087 3,115 4,005 4,361 5,145 5,607 6,615 9,261 9,345 12,015 13,083 15,435 16,821 21,805 28,035 30,527 39,249 46,305 65,415 84,105 91,581 117,747 152,635 196,245 274,743 457,905 588,735 824,229 1,373,715 and 4,121,145, with no remainder.

Since 4,121,145 cannot be divided by just 1 and 4,121,145, 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).