42318938 has 4 divisors (see below), whose sum is σ = 63478410. Its totient is φ = 21159468.

The previous prime is 42318907. The next prime is 42318943. The reversal of 42318938 is 83981324.

42318938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 29929 = 6503^2 + 173^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10579733 + ... + 10579736.

Almost surely, 2^42318938 is an apocalyptic number.

42318938 is a deficient number, since it is larger than the sum of its proper divisors (21159472).

42318938 is a wasteful number, since it uses less digits than its factorization.

42318938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21159471.

The product of its digits is 41472, while the sum is 38.

The square root of 42318938 is about 6505.3007616866. The cubic root of 42318938 is about 348.4803172851.

The spelling of 42318938 in words is "forty-two million, three hundred eighteen thousand, nine hundred thirty-eight".