Q: Is 21,470 a Prime Number?
A: No, 21,470 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 21470 can be evenly divided by 1 2 5 10 19 38 95 113 190 226 565 1,130 2,147 4,294 10,735 and 21,470, with no remainder.
Since 21,470 cannot be divided by just 1 and 21,470, it is not a prime number.