A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4702404 can be evenly divided by 1 2 3 4 6 7 12 14 17 21 28 34 37 42 51 68 74 84 89 102 111 119 148 178 204 222 238 259 267 356 357 444 476 518 534 623 629 714 777 1,036 1,068 1,246 1,258 1,428 1,513 1,554 1,869 1,887 2,492 2,516 3,026 3,108 3,293 3,738 3,774 4,403 4,539 6,052 6,586 7,476 7,548 8,806 9,078 9,879 10,591 13,172 13,209 17,612 18,156 19,758 21,182 23,051 26,418 31,773 39,516 42,364 46,102 52,836 55,981 63,546 69,153 92,204 111,962 127,092 138,306 167,943 223,924 276,612 335,886 391,867 671,772 783,734 1,175,601 1,567,468 2,351,202 and 4,702,404, with no remainder.
Since 4,702,404 cannot be divided by just 1 and 4,702,404, it is not a prime number.