42542527 has 4 divisors (see below), whose sum is σ = 43081120. Its totient is φ = 42003936.

The previous prime is 42542519. The next prime is 42542531. The reversal of 42542527 is 72524524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42542527 - 2³ = 42542519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269178 + ... + 269335.

It is an arithmetic number, because the mean of its divisors is an integer number (10770280).

Almost surely, 2^42542527 is an apocalyptic number.

42542527 is a deficient number, since it is larger than the sum of its proper divisors (538593).

42542527 is an equidigital number, since it uses as much as digits as its factorization.

42542527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538592.

The product of its digits is 22400, while the sum is 31.

The square root of 42542527 is about 6522.4632616827. The cubic root of 42542527 is about 349.0929629776.

The spelling of 42542527 in words is "forty-two million, five hundred forty-two thousand, five hundred twenty-seven".