Q: Is 642,540,240 a Composite Number?

Why is 642,540,240 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 642,540,240 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 29 30 36 40 45 48 58 60 72 80 87 90 116 120 144 145 174 180 232 240 261 290 348 360 435 464 522 580 696 720 870 1,044 1,160 1,305 1,392 1,740 2,088 2,320 2,610 3,480 4,176 5,220 6,960 10,440 20,880 30,773 61,546 92,319 123,092 153,865 184,638 246,184 276,957 307,730 369,276 461,595 492,368 553,914 615,460 738,552 892,417 923,190 1,107,828 1,230,920 1,384,785 1,477,104 1,784,834 1,846,380 2,215,656 2,461,840 2,677,251 2,769,570 3,569,668 3,692,760 4,431,312 4,462,085 5,354,502 5,539,140 7,139,336 7,385,520 8,031,753 8,924,170 10,709,004 11,078,280 13,386,255 14,278,672 16,063,506 17,848,340 21,418,008 22,156,560 26,772,510 32,127,012 35,696,680 40,158,765 42,836,016 53,545,020 64,254,024 71,393,360 80,317,530 107,090,040 128,508,048 160,635,060 214,180,080 321,270,120 and 642,540,240, with no remainder.

Since 642,540,240 cannot be divided by just 1 and 642,540,240, 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).