Q: Is 1,420,005 a Prime Number?
A: No, 1,420,005 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 1420005 can be evenly divided by 1 3 5 15 137 411 685 691 2,055 2,073 3,455 10,365 94,667 284,001 473,335 and 1,420,005, with no remainder.
Since 1,420,005 cannot be divided by just 1 and 1,420,005, it is not a prime number.