42508838 has 8 divisors (see below), whose sum is σ = 65962080. Its totient is φ = 20521480.

The previous prime is 42508799. The next prime is 42508847. The reversal of 42508838 is 83880524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42508838² = 3614002616220488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366398 + ... + 366513.

It is an arithmetic number, because the mean of its divisors is an integer number (8245260).

Almost surely, 2^42508838 is an apocalyptic number.

42508838 is a deficient number, since it is larger than the sum of its proper divisors (23453242).

42508838 is a wasteful number, since it uses less digits than its factorization.

42508838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732942.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 42508838 is about 6519.8802136236. The cubic root of 42508838 is about 349.0007909058. Note that the first 3 decimals are identical.

The spelling of 42508838 in words is "forty-two million, five hundred eight thousand, eight hundred thirty-eight".