Q: Is 21,242 a Prime Number?
A: No, 21,242 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 21242 can be evenly divided by 1 2 13 19 26 38 43 86 247 494 559 817 1,118 1,634 10,621 and 21,242, with no remainder.
Since 21,242 cannot be divided by just 1 and 21,242, it is not a prime number.