42542434 has 8 divisors (see below), whose sum is σ = 69614928. Its totient is φ = 19337460.

The previous prime is 42542431. The next prime is 42542443. The reversal of 42542434 is 43424524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42542431) 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, 966852 + ... + 966895.

It is an arithmetic number, because the mean of its divisors is an integer number (8701866).

Almost surely, 2^42542434 is an apocalyptic number.

42542434 is a deficient number, since it is larger than the sum of its proper divisors (27072494).

42542434 is a wasteful number, since it uses less digits than its factorization.

42542434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933760.

The product of its digits is 15360, while the sum is 28.

The square root of 42542434 is about 6522.4561324703. The cubic root of 42542434 is about 349.0927085994.

Adding to 42542434 its reverse (43424524), we get a palindrome (85966958).

The spelling of 42542434 in words is "forty-two million, five hundred forty-two thousand, four hundred thirty-four".