42031938 has 16 divisors (see below), whose sum is σ = 90530496. Its totient is φ = 12932880.

The previous prime is 42031937. The next prime is 42031949. The reversal of 42031938 is 83913024.

It is a super-3 number, since 3×42031938³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42031937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269358 + ... + 269513.

It is an arithmetic number, because the mean of its divisors is an integer number (5658156).

Almost surely, 2^42031938 is an apocalyptic number.

42031938 is an abundant number, since it is smaller than the sum of its proper divisors (48498558).

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

42031938 is a wasteful number, since it uses less digits than its factorization.

42031938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538889.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 42031938 is about 6483.2043003441. The cubic root of 42031938 is about 347.6907511637.

The spelling of 42031938 in words is "forty-two million, thirty-one thousand, nine hundred thirty-eight".