42542444 has 24 divisors (see below), whose sum is σ = 89564160. Its totient is φ = 17272656.

The previous prime is 42542443. The next prime is 42542459. The reversal of 42542444 is 44424524.

It is not an unprimeable number, because it can be changed into a prime (42542443) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 39452 + ... + 40515.

It is an arithmetic number, because the mean of its divisors is an integer number (3731840).

Almost surely, 2^42542444 is an apocalyptic number.

It is an amenable number.

42542444 is an abundant number, since it is smaller than the sum of its proper divisors (47021716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42542444 is a wasteful number, since it uses less digits than its factorization.

42542444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79997 (or 79995 counting only the distinct ones).

The product of its digits is 20480, while the sum is 29.

The square root of 42542444 is about 6522.4568990527. The cubic root of 42542444 is about 349.0927359519.

Adding to 42542444 its reverse (44424524), we get a palindrome (86966968).

The spelling of 42542444 in words is "forty-two million, five hundred forty-two thousand, four hundred forty-four".