The number 5,421,360 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 49 56 60 70 80 84 98 105 112 120 140 147 168 196 210 240 245 280 294 336 392 420 461 490 560 588 735 784 840 922 980 1,176 1,383 1,470 1,680 1,844 1,960 2,305 2,352 2,766 2,940 3,227 3,688 3,920 4,610 5,532 5,880 6,454 6,915 7,376 9,220 9,681 11,064 11,760 12,908 13,830 16,135 18,440 19,362 22,128 22,589 25,816 27,660 32,270 36,880 38,724 45,178 48,405 51,632 55,320 64,540 67,767 77,448 90,356 96,810 110,640 112,945 129,080 135,534 154,896 180,712 193,620 225,890 258,160 271,068 338,835 361,424 387,240 451,780 542,136 677,670 774,480 903,560 1,084,272 1,355,340 1,807,120 2,710,680 and 5,421,360, with no remainder.
Since 5,421,360 cannot be divided by just 1 and 5,421,360, it is a composite number.