42912738 has 24 divisors (see below), whose sum is σ = 101430576. Its totient is φ = 13003800.

The previous prime is 42912719. The next prime is 42912769. The reversal of 42912738 is 83721924.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108168 + ... + 108563.

It is an arithmetic number, because the mean of its divisors is an integer number (4226274).

Almost surely, 2^42912738 is an apocalyptic number.

42912738 is an abundant number, since it is smaller than the sum of its proper divisors (58517838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42912738 is a wasteful number, since it uses less digits than its factorization.

42912738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216750 (or 216747 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42912738 is about 6550.7814800984. The cubic root of 42912738 is about 350.1026583218.

The spelling of 42912738 in words is "forty-two million, nine hundred twelve thousand, seven hundred thirty-eight".