A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3442032 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 24 33 36 41 44 48 53 66 72 82 88 99 106 123 132 144 159 164 176 198 212 246 264 318 328 369 396 424 451 477 492 528 583 636 656 738 792 848 902 954 984 1,166 1,272 1,353 1,476 1,584 1,749 1,804 1,908 1,968 2,173 2,332 2,544 2,706 2,952 3,498 3,608 3,816 4,059 4,346 4,664 5,247 5,412 5,904 6,519 6,996 7,216 7,632 8,118 8,692 9,328 10,494 10,824 13,038 13,992 16,236 17,384 19,557 20,988 21,648 23,903 26,076 27,984 32,472 34,768 39,114 41,976 47,806 52,152 64,944 71,709 78,228 83,952 95,612 104,304 143,418 156,456 191,224 215,127 286,836 312,912 382,448 430,254 573,672 860,508 1,147,344 1,721,016 and 3,442,032, with no remainder.
Since 3,442,032 cannot be divided by just 1 and 3,442,032, it is not a prime number.