538686042 has 8 divisors (see below), whose sum is σ = 1077372096. Its totient is φ = 179562012.

The previous prime is 538685999. The next prime is 538686047. The reversal of 538686042 is 240686835.

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

538686042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 538685985 and 538686003.

It is not an unprimeable number, because it can be changed into a prime (538686047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44890498 + ... + 44890509.

It is an arithmetic number, because the mean of its divisors is an integer number (134671512).

Almost surely, 2^538686042 is an apocalyptic number.

538686042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

538686042 is a wasteful number, since it uses less digits than its factorization.

538686042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89781012.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 538686042 is about 23209.6109833836. The cubic root of 538686042 is about 813.6642613672.

The spelling of 538686042 in words is "five hundred thirty-eight million, six hundred eighty-six thousand, forty-two".