42937139 has 16 divisors (see below), whose sum is σ = 52408320. Its totient is φ = 34382880.

The previous prime is 42937123. The next prime is 42937157. The reversal of 42937139 is 93173924.

It is not a de Polignac number, because 42937139 - 2⁴ = 42937123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42937109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2882 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (3275520).

Almost surely, 2^42937139 is an apocalyptic number.

42937139 is a deficient number, since it is larger than the sum of its proper divisors (9471181).

42937139 is a wasteful number, since it uses less digits than its factorization.

42937139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its digits is 40824, while the sum is 38.

The square root of 42937139 is about 6552.6436649645. The cubic root of 42937139 is about 350.1690040943.

The spelling of 42937139 in words is "forty-two million, nine hundred thirty-seven thousand, one hundred thirty-nine".