538542 has 16 divisors (see below), whose sum is σ = 1196880. Its totient is φ = 179496.

The previous prime is 538529. The next prime is 538553. The reversal of 538542 is 245835.

538542 is nontrivially palindromic in base 7.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933 + ... + 5040.

It is an arithmetic number, because the mean of its divisors is an integer number (74805).

2⁵³⁸⁵⁴² is an apocalyptic number.

538542 is an abundant number, since it is smaller than the sum of its proper divisors (658338).

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

538542 is a wasteful number, since it uses less digits than its factorization.

538542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9984 (or 9978 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 538542 is about 733.8542089543. The cubic root of 538542 is about 81.3591731627.

The spelling of 538542 in words is "five hundred thirty-eight thousand, five hundred forty-two".