Q: Is 400,340 a Prime Number?
A: No, 400,340 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 400340 can be evenly divided by 1 2 4 5 10 20 37 74 148 185 370 541 740 1,082 2,164 2,705 5,410 10,820 20,017 40,034 80,068 100,085 200,170 and 400,340, with no remainder.
Since 400,340 cannot be divided by just 1 and 400,340, it is not a prime number.