42118938 has 24 divisors (see below), whose sum is σ = 91742976. Its totient is φ = 13965000.

The previous prime is 42118927. The next prime is 42118943. The reversal of 42118938 is 83981124.

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, 2688 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (3822624).

Almost surely, 2^42118938 is an apocalyptic number.

42118938 is an abundant number, since it is smaller than the sum of its proper divisors (49624038).

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

42118938 is a wasteful number, since it uses less digits than its factorization.

42118938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12450 (or 12447 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 42118938 is about 6489.9104770405. The cubic root of 42118938 is about 347.9304756078.

The spelling of 42118938 in words is "forty-two million, one hundred eighteen thousand, nine hundred thirty-eight".