Q: Is 1,142,420 a Prime Number?
A: No, 1,142,420 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 1142420 can be evenly divided by 1 2 4 5 10 20 239 478 956 1,195 2,390 4,780 57,121 114,242 228,484 285,605 571,210 and 1,142,420, with no remainder.
Since 1,142,420 cannot be divided by just 1 and 1,142,420, it is not a prime number.