Q: Is 856,842 a Prime Number?
A: No, 856,842 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 856842 can be evenly divided by 1 2 3 6 7 14 21 23 42 46 69 138 161 322 483 887 966 1,774 2,661 5,322 6,209 12,418 18,627 20,401 37,254 40,802 61,203 122,406 142,807 285,614 428,421 and 856,842, with no remainder.
Since 856,842 cannot be divided by just 1 and 856,842, it is not a prime number.