42911937 has 20 divisors (see below), whose sum is σ = 67479280. Its totient is φ = 27101304.

The previous prime is 42911933. The next prime is 42911969. The reversal of 42911937 is 73911924.

It is not a de Polignac number, because 42911937 - 2² = 42911933 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42911933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12403 + ... + 15480.

It is an arithmetic number, because the mean of its divisors is an integer number (3373964).

Almost surely, 2^42911937 is an apocalyptic number.

It is an amenable number.

42911937 is a deficient number, since it is larger than the sum of its proper divisors (24567343).

42911937 is a wasteful number, since it uses less digits than its factorization.

42911937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27914 (or 27905 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 42911937 is about 6550.7203420693. The cubic root of 42911937 is about 350.1004799944.

The spelling of 42911937 in words is "forty-two million, nine hundred eleven thousand, nine hundred thirty-seven".