Q: Is 21,270 a Prime Number?
A: No, 21,270 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 21270 can be evenly divided by 1 2 3 5 6 10 15 30 709 1,418 2,127 3,545 4,254 7,090 10,635 and 21,270, with no remainder.
Since 21,270 cannot be divided by just 1 and 21,270, it is not a prime number.