Q: Is 2,145,240 a Composite Number?

Why is 2,145,240 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 2,145,240 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 59 60 72 90 101 118 120 177 180 202 236 295 303 354 360 404 472 505 531 590 606 708 808 885 909 1,010 1,062 1,180 1,212 1,416 1,515 1,770 1,818 2,020 2,124 2,360 2,424 2,655 3,030 3,540 3,636 4,040 4,248 4,545 5,310 5,959 6,060 7,080 7,272 9,090 10,620 11,918 12,120 17,877 18,180 21,240 23,836 29,795 35,754 36,360 47,672 53,631 59,590 71,508 89,385 107,262 119,180 143,016 178,770 214,524 238,360 268,155 357,540 429,048 536,310 715,080 1,072,620 and 2,145,240, with no remainder.

Since 2,145,240 cannot be divided by just 1 and 2,145,240, 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).