Q: Is 85,420 a Prime Number?
A: No, 85,420 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 85420 can be evenly divided by 1 2 4 5 10 20 4,271 8,542 17,084 21,355 42,710 and 85,420, with no remainder.
Since 85,420 cannot be divided by just 1 and 85,420, it is not a prime number.