The number 4,121,712 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 29 36 42 47 48 54 56 58 63 72 84 87 94 108 112 116 126 141 144 168 174 188 189 203 216 232 252 261 282 329 336 348 376 378 406 423 432 464 504 522 564 609 658 696 752 756 783 812 846 987 1,008 1,044 1,128 1,218 1,269 1,316 1,363 1,392 1,512 1,566 1,624 1,692 1,827 1,974 2,088 2,256 2,436 2,538 2,632 2,726 2,961 3,024 3,132 3,248 3,384 3,654 3,948 4,089 4,176 4,872 5,076 5,264 5,452 5,481 5,922 6,264 6,768 7,308 7,896 8,178 8,883 9,541 9,744 10,152 10,904 10,962 11,844 12,267 12,528 14,616 15,792 16,356 17,766 19,082 20,304 21,808 21,924 23,688 24,534 28,623 29,232 32,712 35,532 36,801 38,164 43,848 47,376 49,068 57,246 65,424 71,064 73,602 76,328 85,869 87,696 98,136 114,492 142,128 147,204 152,656 171,738 196,272 228,984 257,607 294,408 343,476 457,968 515,214 588,816 686,952 1,030,428 1,373,904 2,060,856 and 4,121,712, with no remainder.
Since 4,121,712 cannot be divided by just 1 and 4,121,712, it is a composite number.