42542735 has 4 divisors (see below), whose sum is σ = 51051288. Its totient is φ = 34034184.

The previous prime is 42542723. The next prime is 42542779. The reversal of 42542735 is 53724524.

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 42542735 - 2⁴ = 42542719 is a prime.

It is a Duffinian number.

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, 4254269 + ... + 4254278.

It is an arithmetic number, because the mean of its divisors is an integer number (12762822).

Almost surely, 2^42542735 is an apocalyptic number.

42542735 is a deficient number, since it is larger than the sum of its proper divisors (8508553).

42542735 is an equidigital number, since it uses as much as digits as its factorization.

42542735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508552.

The product of its digits is 33600, while the sum is 32.

The square root of 42542735 is about 6522.4792065594. The cubic root of 42542735 is about 349.0935319081.

The spelling of 42542735 in words is "forty-two million, five hundred forty-two thousand, seven hundred thirty-five".