A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 334152 can be evenly divided by 1 2 3 4 6 7 8 9 12 13 14 17 18 21 24 26 27 28 34 36 39 42 51 52 54 56 63 68 72 78 84 91 102 104 108 117 119 126 136 153 156 168 182 189 204 216 221 234 238 252 273 306 312 351 357 364 378 408 442 459 468 476 504 546 612 663 702 714 728 756 819 884 918 936 952 1,071 1,092 1,224 1,326 1,404 1,428 1,512 1,547 1,638 1,768 1,836 1,989 2,142 2,184 2,457 2,652 2,808 2,856 3,094 3,213 3,276 3,672 3,978 4,284 4,641 4,914 5,304 5,967 6,188 6,426 6,552 7,956 8,568 9,282 9,828 11,934 12,376 12,852 13,923 15,912 18,564 19,656 23,868 25,704 27,846 37,128 41,769 47,736 55,692 83,538 111,384 167,076 and 334,152, with no remainder.
Since 334,152 cannot be divided by just 1 and 334,152, it is not a prime number.