Q: Is 425,420 a Prime Number?
A: No, 425,420 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 425420 can be evenly divided by 1 2 4 5 10 20 89 178 239 356 445 478 890 956 1,195 1,780 2,390 4,780 21,271 42,542 85,084 106,355 212,710 and 425,420, with no remainder.
Since 425,420 cannot be divided by just 1 and 425,420, it is not a prime number.