The number 2,010,420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 17 18 20 27 30 34 36 45 51 54 60 68 73 81 85 90 102 108 135 146 153 162 170 180 204 219 255 270 292 306 324 340 365 405 438 459 510 540 612 657 730 765 810 876 918 1,020 1,095 1,241 1,314 1,377 1,460 1,530 1,620 1,836 1,971 2,190 2,295 2,482 2,628 2,754 3,060 3,285 3,723 3,942 4,380 4,590 4,964 5,508 5,913 6,205 6,570 6,885 7,446 7,884 9,180 9,855 11,169 11,826 12,410 13,140 13,770 14,892 18,615 19,710 22,338 23,652 24,820 27,540 29,565 33,507 37,230 39,420 44,676 55,845 59,130 67,014 74,460 100,521 111,690 118,260 134,028 167,535 201,042 223,380 335,070 402,084 502,605 670,140 1,005,210 and 2,010,420, with no remainder.
Since 2,010,420 cannot be divided by just 1 and 2,010,420, it is a composite number.