Q: Is 340,420 a Prime Number?
A: No, 340,420 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 340420 can be evenly divided by 1 2 4 5 10 20 17,021 34,042 68,084 85,105 170,210 and 340,420, with no remainder.
Since 340,420 cannot be divided by just 1 and 340,420, it is not a prime number.