The number 4,143,216 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 16 19 21 22 24 28 33 38 42 44 48 56 57 59 66 76 77 84 88 112 114 118 132 133 152 154 168 176 177 209 228 231 236 264 266 304 308 336 354 399 413 418 456 462 472 528 532 616 627 649 708 798 826 836 912 924 944 1,064 1,121 1,232 1,239 1,254 1,298 1,416 1,463 1,596 1,652 1,672 1,848 1,947 2,128 2,242 2,478 2,508 2,596 2,832 2,926 3,192 3,304 3,344 3,363 3,696 3,894 4,389 4,484 4,543 4,956 5,016 5,192 5,852 6,384 6,608 6,726 7,788 7,847 8,778 8,968 9,086 9,912 10,032 10,384 11,704 12,331 13,452 13,629 15,576 15,694 17,556 17,936 18,172 19,824 23,408 23,541 24,662 26,904 27,258 31,152 31,388 35,112 36,344 36,993 47,082 49,324 53,808 54,516 62,776 70,224 72,688 73,986 86,317 94,164 98,648 109,032 125,552 147,972 172,634 188,328 197,296 218,064 258,951 295,944 345,268 376,656 517,902 591,888 690,536 1,035,804 1,381,072 2,071,608 and 4,143,216, with no remainder.
Since 4,143,216 cannot be divided by just 1 and 4,143,216, it is a composite number.