Q: Is 205,420 a Prime Number?
A: No, 205,420 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 205420 can be evenly divided by 1 2 4 5 10 20 10,271 20,542 41,084 51,355 102,710 and 205,420, with no remainder.
Since 205,420 cannot be divided by just 1 and 205,420, it is not a prime number.