Q: Is 2,120,742 a Composite Number?

Why is 2,120,742 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 2,120,742 can be evenly divided by 1 2 3 6 9 13 18 19 26 27 38 39 53 54 57 78 81 106 114 117 159 162 171 234 247 318 342 351 477 494 513 689 702 741 954 1,007 1,026 1,053 1,378 1,431 1,482 1,539 2,014 2,067 2,106 2,223 2,862 3,021 3,078 4,134 4,293 4,446 6,042 6,201 6,669 8,586 9,063 12,402 13,091 13,338 18,126 18,603 20,007 26,182 27,189 37,206 39,273 40,014 54,378 55,809 78,546 81,567 111,618 117,819 163,134 235,638 353,457 706,914 1,060,371 and 2,120,742, with no remainder.

Since 2,120,742 cannot be divided by just 1 and 2,120,742, 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).