The number 1,316,520 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 23 24 27 30 36 40 45 46 53 54 60 69 72 90 92 106 108 115 120 135 138 159 180 184 207 212 216 230 265 270 276 318 345 360 414 424 460 477 530 540 552 621 636 690 795 828 920 954 1,035 1,060 1,080 1,219 1,242 1,272 1,380 1,431 1,590 1,656 1,908 2,070 2,120 2,385 2,438 2,484 2,760 2,862 3,105 3,180 3,657 3,816 4,140 4,770 4,876 4,968 5,724 6,095 6,210 6,360 7,155 7,314 8,280 9,540 9,752 10,971 11,448 12,190 12,420 14,310 14,628 18,285 19,080 21,942 24,380 24,840 28,620 29,256 32,913 36,570 43,884 48,760 54,855 57,240 65,826 73,140 87,768 109,710 131,652 146,280 164,565 219,420 263,304 329,130 438,840 658,260 and 1,316,520, with no remainder.
Since 1,316,520 cannot be divided by just 1 and 1,316,520, it is a composite number.