A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2402244 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 27 29 36 39 52 54 58 59 78 87 108 116 117 118 156 174 177 234 236 261 348 351 354 377 468 522 531 702 708 754 767 783 1,044 1,062 1,131 1,404 1,508 1,534 1,566 1,593 1,711 2,124 2,262 2,301 3,068 3,132 3,186 3,393 3,422 4,524 4,602 5,133 6,372 6,786 6,844 6,903 9,204 10,179 10,266 13,572 13,806 15,399 20,358 20,532 20,709 22,243 27,612 30,798 40,716 41,418 44,486 46,197 61,596 66,729 82,836 88,972 92,394 133,458 184,788 200,187 266,916 400,374 600,561 800,748 1,201,122 and 2,402,244, with no remainder.
Since 2,402,244 cannot be divided by just 1 and 2,402,244, it is not a prime number.