Q: Is 121,820 a Prime Number?
A: No, 121,820 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 121820 can be evenly divided by 1 2 4 5 10 20 6,091 12,182 24,364 30,455 60,910 and 121,820, with no remainder.
Since 121,820 cannot be divided by just 1 and 121,820, it is not a prime number.