42542 has 8 divisors (see below), whose sum is σ = 64800. Its totient is φ = 20944.

The previous prime is 42533. The next prime is 42557. The reversal of 42542 is 24524.

42542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42542.

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, 59 + ... + 297.

It is an arithmetic number, because the mean of its divisors is an integer number (8100).

2⁴²⁵⁴² is an apocalyptic number.

42542 is a deficient number, since it is larger than the sum of its proper divisors (22258).

42542 is a wasteful number, since it uses less digits than its factorization.

42542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its digits is 320, while the sum is 17.

The square root of 42542 is about 206.2571210892. The cubic root of 42542 is about 34.9091521496.

The spelling of 42542 in words is "forty-two thousand, five hundred forty-two".