Q: Is 421,473 a Prime Number?
A: No, 421,473 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 421473 can be evenly divided by 1 3 13 39 101 107 303 321 1,313 1,391 3,939 4,173 10,807 32,421 140,491 and 421,473, with no remainder.
Since 421,473 cannot be divided by just 1 and 421,473, it is not a prime number.