Q: Is 816,642 a Prime Number?
A: No, 816,642 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 816642 can be evenly divided by 1 2 3 6 9 18 27 54 71 81 142 162 213 426 639 1,278 1,917 3,834 5,041 5,751 10,082 11,502 15,123 30,246 45,369 90,738 136,107 272,214 408,321 and 816,642, with no remainder.
Since 816,642 cannot be divided by just 1 and 816,642, it is not a prime number.