42542366 has 4 divisors (see below), whose sum is σ = 63813552. Its totient is φ = 21271182.

The previous prime is 42542329. The next prime is 42542377. The reversal of 42542366 is 66324524.

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

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 as a sum of consecutive naturals, namely, 10635590 + ... + 10635593.

It is an arithmetic number, because the mean of its divisors is an integer number (15953388).

Almost surely, 2^42542366 is an apocalyptic number.

42542366 is a deficient number, since it is larger than the sum of its proper divisors (21271186).

42542366 is a wasteful number, since it uses less digits than its factorization.

42542366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21271185.

The product of its digits is 34560, while the sum is 32.

The square root of 42542366 is about 6522.4509197080. The cubic root of 42542366 is about 349.0925226023.

The spelling of 42542366 in words is "forty-two million, five hundred forty-two thousand, three hundred sixty-six".