A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 413424 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 24 27 29 33 36 44 48 54 58 66 72 81 87 88 99 108 116 132 144 162 174 176 198 216 232 261 264 297 319 324 348 396 432 464 522 528 594 638 648 696 783 792 891 957 1,044 1,188 1,276 1,296 1,392 1,566 1,584 1,782 1,914 2,088 2,349 2,376 2,552 2,871 3,132 3,564 3,828 4,176 4,698 4,752 5,104 5,742 6,264 7,128 7,656 8,613 9,396 11,484 12,528 14,256 15,312 17,226 18,792 22,968 25,839 34,452 37,584 45,936 51,678 68,904 103,356 137,808 206,712 and 413,424, with no remainder.
Since 413,424 cannot be divided by just 1 and 413,424, it is not a prime number.