A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2472470 can be evenly divided by 1 2 5 7 10 11 13 14 19 22 26 35 38 55 65 70 77 91 95 110 130 133 143 154 169 182 190 209 247 266 286 338 385 418 455 494 665 715 770 845 910 1,001 1,045 1,183 1,235 1,330 1,430 1,463 1,690 1,729 1,859 2,002 2,090 2,366 2,470 2,717 2,926 3,211 3,458 3,718 5,005 5,434 5,915 6,422 7,315 8,645 9,295 10,010 11,830 13,013 13,585 14,630 16,055 17,290 18,590 19,019 22,477 26,026 27,170 32,110 35,321 38,038 44,954 65,065 70,642 95,095 112,385 130,130 176,605 190,190 224,770 247,247 353,210 494,494 1,236,235 and 2,472,470, with no remainder.
Since 2,472,470 cannot be divided by just 1 and 2,472,470, it is not a prime number.