Q: Is 1,401,624 a Prime Number?
A: No, 1,401,624 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1401624 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 81 84 103 108 126 162 168 189 206 216 243 252 309 324 378 412 486 504 567 618 648 721 756 824 927 972 1,134 1,236 1,442 1,512 1,701 1,854 1,944 2,163 2,268 2,472 2,781 2,884 3,402 3,708 4,326 4,536 5,562 5,768 6,489 6,804 7,416 8,343 8,652 11,124 12,978 13,608 16,686 17,304 19,467 22,248 25,029 25,956 33,372 38,934 50,058 51,912 58,401 66,744 77,868 100,116 116,802 155,736 175,203 200,232 233,604 350,406 467,208 700,812 and 1,401,624, with no remainder.
Since 1,401,624 cannot be divided by just 1 and 1,401,624, it is not a prime number.