Q: Is 840,842 a Prime Number?
A: No, 840,842 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 840842 can be evenly divided by 1 2 420,421 and 840,842, with no remainder.
Since 840,842 cannot be divided by just 1 and 840,842, it is not a prime number.