Q: Is 1,421,316 a Prime Number?
A: No, 1,421,316 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 1421316 can be evenly divided by 1 2 3 4 6 9 12 13 18 26 36 39 52 78 117 156 234 468 3,037 6,074 9,111 12,148 18,222 27,333 36,444 39,481 54,666 78,962 109,332 118,443 157,924 236,886 355,329 473,772 710,658 and 1,421,316, with no remainder.
Since 1,421,316 cannot be divided by just 1 and 1,421,316, it is not a prime number.