Q: Is 421,928 a Prime Number?
A: No, 421,928 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 421928 can be evenly divided by 1 2 4 8 13 26 52 104 4,057 8,114 16,228 32,456 52,741 105,482 210,964 and 421,928, with no remainder.
Since 421,928 cannot be divided by just 1 and 421,928, it is not a prime number.