The number 4,314,240 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 107 112 120 126 128 140 144 160 168 180 192 210 214 224 240 252 280 288 315 320 321 336 360 384 420 428 448 480 504 535 560 576 630 640 642 672 720 749 840 856 896 960 963 1,008 1,070 1,120 1,152 1,260 1,284 1,344 1,440 1,498 1,605 1,680 1,712 1,920 1,926 2,016 2,140 2,240 2,247 2,520 2,568 2,688 2,880 2,996 3,210 3,360 3,424 3,745 3,852 4,032 4,280 4,480 4,494 4,815 5,040 5,136 5,760 5,992 6,420 6,720 6,741 6,848 7,490 7,704 8,064 8,560 8,988 9,630 10,080 10,272 11,235 11,984 12,840 13,440 13,482 13,696 14,980 15,408 17,120 17,976 19,260 20,160 20,544 22,470 23,968 25,680 26,964 29,960 30,816 33,705 34,240 35,952 38,520 40,320 41,088 44,940 47,936 51,360 53,928 59,920 61,632 67,410 68,480 71,904 77,040 89,880 95,872 102,720 107,856 119,840 123,264 134,820 143,808 154,080 179,760 205,440 215,712 239,680 269,640 287,616 308,160 359,520 431,424 479,360 539,280 616,320 719,040 862,848 1,078,560 1,438,080 2,157,120 and 4,314,240, with no remainder.
Since 4,314,240 cannot be divided by just 1 and 4,314,240, it is a composite number.