Q: Is 243,420 a Prime Number?
A: No, 243,420 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 243420 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 4,057 8,114 12,171 16,228 20,285 24,342 40,570 48,684 60,855 81,140 121,710 and 243,420, with no remainder.
Since 243,420 cannot be divided by just 1 and 243,420, it is not a prime number.