Q: Is 840,540 a Prime Number?
A: No, 840,540 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 840540 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 14,009 28,018 42,027 56,036 70,045 84,054 140,090 168,108 210,135 280,180 420,270 and 840,540, with no remainder.
Since 840,540 cannot be divided by just 1 and 840,540, it is not a prime number.