The number 1,240,272 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 24 27 29 33 36 44 48 54 58 66 72 81 87 88 99 108 116 132 144 162 174 176 198 216 232 243 261 264 297 319 324 348 396 432 464 486 522 528 594 638 648 696 783 792 891 957 972 1,044 1,188 1,276 1,296 1,392 1,566 1,584 1,782 1,914 1,944 2,088 2,349 2,376 2,552 2,673 2,871 3,132 3,564 3,828 3,888 4,176 4,698 4,752 5,104 5,346 5,742 6,264 7,047 7,128 7,656 8,613 9,396 10,692 11,484 12,528 14,094 14,256 15,312 17,226 18,792 21,384 22,968 25,839 28,188 34,452 37,584 42,768 45,936 51,678 56,376 68,904 77,517 103,356 112,752 137,808 155,034 206,712 310,068 413,424 620,136 and 1,240,272, with no remainder.
Since 1,240,272 cannot be divided by just 1 and 1,240,272, it is a composite number.