Q: Is 121,400 a Prime Number?
A: No, 121,400 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 121400 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 200 607 1,214 2,428 3,035 4,856 6,070 12,140 15,175 24,280 30,350 60,700 and 121,400, with no remainder.
Since 121,400 cannot be divided by just 1 and 121,400, it is not a prime number.