Q: Is 39,420 a Prime Number?
A: No, 39,420 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 39420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 73 90 108 135 146 180 219 270 292 365 438 540 657 730 876 1,095 1,314 1,460 1,971 2,190 2,628 3,285 3,942 4,380 6,570 7,884 9,855 13,140 19,710 and 39,420, with no remainder.
Since 39,420 cannot be divided by just 1 and 39,420, it is not a prime number.