42542951 has 4 divisors (see below), whose sum is σ = 46410504. Its totient is φ = 38675400.

The previous prime is 42542947. The next prime is 42542963. The reversal of 42542951 is 15924524.

42542951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42542951 - 2² = 42542947 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 (42542911) 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, 1933760 + ... + 1933781.

It is an arithmetic number, because the mean of its divisors is an integer number (11602626).

Almost surely, 2^42542951 is an apocalyptic number.

42542951 is a deficient number, since it is larger than the sum of its proper divisors (3867553).

42542951 is a wasteful number, since it uses less digits than its factorization.

42542951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867552.

The product of its digits is 14400, while the sum is 32.

The square root of 42542951 is about 6522.4957646594. The cubic root of 42542951 is about 349.0941227185.

The spelling of 42542951 in words is "forty-two million, five hundred forty-two thousand, nine hundred fifty-one".