The number 1,459,080 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 54 56 60 63 70 72 84 90 105 108 120 126 135 140 168 180 189 193 210 216 252 270 280 315 360 378 386 420 504 540 579 630 756 772 840 945 965 1,080 1,158 1,260 1,351 1,512 1,544 1,737 1,890 1,930 2,316 2,520 2,702 2,895 3,474 3,780 3,860 4,053 4,632 5,211 5,404 5,790 6,755 6,948 7,560 7,720 8,106 8,685 10,422 10,808 11,580 12,159 13,510 13,896 16,212 17,370 20,265 20,844 23,160 24,318 26,055 27,020 32,424 34,740 36,477 40,530 41,688 48,636 52,110 54,040 60,795 69,480 72,954 81,060 97,272 104,220 121,590 145,908 162,120 182,385 208,440 243,180 291,816 364,770 486,360 729,540 and 1,459,080, with no remainder.
Since 1,459,080 cannot be divided by just 1 and 1,459,080, it is a composite number.