42911518 has 16 divisors (see below), whose sum is σ = 69481440. Its totient is φ = 19758816.

The previous prime is 42911509. The next prime is 42911569. The reversal of 42911518 is 81511924.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42911518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10968 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (4342590).

Almost surely, 2^42911518 is an apocalyptic number.

42911518 is a deficient number, since it is larger than the sum of its proper divisors (26569922).

42911518 is a wasteful number, since it uses less digits than its factorization.

42911518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891.

The product of its digits is 2880, while the sum is 31.

The square root of 42911518 is about 6550.6883607755. The cubic root of 42911518 is about 350.0993405090.

The spelling of 42911518 in words is "forty-two million, nine hundred eleven thousand, five hundred eighteen".