42158908 has 24 divisors (see below), whose sum is σ = 83986560. Its totient is φ = 18329520.

The previous prime is 42158899. The next prime is 42158923. The reversal of 42158908 is 80985124.

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, 19818 + ... + 21841.

It is an arithmetic number, because the mean of its divisors is an integer number (3499440).

Almost surely, 2^42158908 is an apocalyptic number.

It is an amenable number.

42158908 is a deficient number, since it is larger than the sum of its proper divisors (41827652).

42158908 is a wasteful number, since it uses less digits than its factorization.

42158908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41697 (or 41695 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 42158908 is about 6492.9891421440. The cubic root of 42158908 is about 348.0405004169.

The spelling of 42158908 in words is "forty-two million, one hundred fifty-eight thousand, nine hundred eight".