42388956 has 36 divisors (see below), whose sum is σ = 113454432. Its totient is φ = 13298304.

The previous prime is 42388949. The next prime is 42388987. The reversal of 42388956 is 65988324.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34020 + ... + 35243.

It is an arithmetic number, because the mean of its divisors is an integer number (3151512).

Almost surely, 2^42388956 is an apocalyptic number.

It is an amenable number.

42388956 is an abundant number, since it is smaller than the sum of its proper divisors (71065476).

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

42388956 is a wasteful number, since it uses less digits than its factorization.

42388956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69290 (or 69285 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 42388956 is about 6510.6801488017. The cubic root of 42388956 is about 348.6724018976.

The spelling of 42388956 in words is "forty-two million, three hundred eighty-eight thousand, nine hundred fifty-six".