Q: Is 138,420 a Prime Number?
A: No, 138,420 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 138420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 769 1,538 2,307 3,076 3,845 4,614 6,921 7,690 9,228 11,535 13,842 15,380 23,070 27,684 34,605 46,140 69,210 and 138,420, with no remainder.
Since 138,420 cannot be divided by just 1 and 138,420, it is not a prime number.