A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4097160 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 30 36 38 40 45 57 60 72 76 90 95 114 120 152 171 180 190 228 285 342 360 380 456 570 599 684 760 855 1,140 1,198 1,368 1,710 1,797 2,280 2,396 2,995 3,420 3,594 4,792 5,391 5,990 6,840 7,188 8,985 10,782 11,381 11,980 14,376 17,970 21,564 22,762 23,960 26,955 34,143 35,940 43,128 45,524 53,910 56,905 68,286 71,880 91,048 102,429 107,820 113,810 136,572 170,715 204,858 215,640 227,620 273,144 341,430 409,716 455,240 512,145 682,860 819,432 1,024,290 1,365,720 2,048,580 and 4,097,160, with no remainder.
Since 4,097,160 cannot be divided by just 1 and 4,097,160, it is not a prime number.