Q: Is 1,245,420 a Composite Number?

Why is 1,245,420 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 1,245,420 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 15 17 18 20 22 30 33 34 36 37 44 45 51 55 60 66 68 74 85 90 99 102 110 111 132 148 153 165 170 180 185 187 198 204 220 222 255 306 330 333 340 370 374 396 407 444 495 510 555 561 612 629 660 666 740 748 765 814 935 990 1,020 1,110 1,122 1,221 1,258 1,332 1,530 1,628 1,665 1,683 1,870 1,887 1,980 2,035 2,220 2,244 2,442 2,516 2,805 3,060 3,145 3,330 3,366 3,663 3,740 3,774 4,070 4,884 5,610 5,661 6,105 6,290 6,660 6,732 6,919 7,326 7,548 8,140 8,415 9,435 11,220 11,322 12,210 12,580 13,838 14,652 16,830 18,315 18,870 20,757 22,644 24,420 27,676 28,305 33,660 34,595 36,630 37,740 41,514 56,610 62,271 69,190 73,260 83,028 103,785 113,220 124,542 138,380 207,570 249,084 311,355 415,140 622,710 and 1,245,420, with no remainder.

Since 1,245,420 cannot be divided by just 1 and 1,245,420, 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).