A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5432112 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 34 36 42 48 51 56 63 68 72 84 102 112 119 126 136 144 153 168 204 238 252 272 306 317 336 357 408 476 504 612 634 714 816 951 952 1,008 1,071 1,224 1,268 1,428 1,902 1,904 2,142 2,219 2,448 2,536 2,853 2,856 3,804 4,284 4,438 5,072 5,389 5,706 5,712 6,657 7,608 8,568 8,876 10,778 11,412 13,314 15,216 16,167 17,136 17,752 19,971 21,556 22,824 26,628 32,334 35,504 37,723 39,942 43,112 45,648 48,501 53,256 64,668 75,446 79,884 86,224 97,002 106,512 113,169 129,336 150,892 159,768 194,004 226,338 258,672 301,784 319,536 339,507 388,008 452,676 603,568 679,014 776,016 905,352 1,358,028 1,810,704 2,716,056 and 5,432,112, with no remainder.
Since 5,432,112 cannot be divided by just 1 and 5,432,112, it is not a prime number.