Q: Is 426,820 a Prime Number?
A: No, 426,820 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 426820 can be evenly divided by 1 2 4 5 10 20 21,341 42,682 85,364 106,705 213,410 and 426,820, with no remainder.
Since 426,820 cannot be divided by just 1 and 426,820, it is not a prime number.