The number 2,340,240 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 98 105 112 120 140 147 168 196 199 210 240 245 280 294 336 392 398 420 490 560 588 597 735 784 796 840 980 995 1,176 1,194 1,393 1,470 1,592 1,680 1,960 1,990 2,352 2,388 2,786 2,940 2,985 3,184 3,920 3,980 4,179 4,776 5,572 5,880 5,970 6,965 7,960 8,358 9,552 9,751 11,144 11,760 11,940 13,930 15,920 16,716 19,502 20,895 22,288 23,880 27,860 29,253 33,432 39,004 41,790 47,760 48,755 55,720 58,506 66,864 78,008 83,580 97,510 111,440 117,012 146,265 156,016 167,160 195,020 234,024 292,530 334,320 390,040 468,048 585,060 780,080 1,170,120 and 2,340,240, with no remainder.
Since 2,340,240 cannot be divided by just 1 and 2,340,240, it is a composite number.