Q: Is 4,142,439 a Prime Number?
A: No, 4,142,439 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 4142439 can be evenly divided by 1 3 7 9 21 47 63 141 329 423 987 1,399 2,961 4,197 9,793 12,591 29,379 65,753 88,137 197,259 460,271 591,777 1,380,813 and 4,142,439, with no remainder.
Since 4,142,439 cannot be divided by just 1 and 4,142,439, it is not a prime number.