Q: Is 1,215,120 a Composite Number?

Why is 1,215,120 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 1,215,120 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 61 80 83 120 122 166 183 240 244 249 305 332 366 415 488 498 610 664 732 830 915 976 996 1,220 1,245 1,328 1,464 1,660 1,830 1,992 2,440 2,490 2,928 3,320 3,660 3,984 4,880 4,980 5,063 6,640 7,320 9,960 10,126 14,640 15,189 19,920 20,252 25,315 30,378 40,504 50,630 60,756 75,945 81,008 101,260 121,512 151,890 202,520 243,024 303,780 405,040 607,560 and 1,215,120, with no remainder.

Since 1,215,120 cannot be divided by just 1 and 1,215,120, 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).