Q: Is 19,420 a Prime Number?
A: No, 19,420 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 19420 can be evenly divided by 1 2 4 5 10 20 971 1,942 3,884 4,855 9,710 and 19,420, with no remainder.
Since 19,420 cannot be divided by just 1 and 19,420, it is not a prime number.