42524642 has 4 divisors (see below), whose sum is σ = 63786966. Its totient is φ = 21262320.

The previous prime is 42524639. The next prime is 42524693. The reversal of 42524642 is 24642524.

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

It can be written as a sum of positive squares in only one way, i.e., 37466641 + 5058001 = 6121^2 + 2249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10631159 + ... + 10631162.

Almost surely, 2^42524642 is an apocalyptic number.

42524642 is a deficient number, since it is larger than the sum of its proper divisors (21262324).

42524642 is a wasteful number, since it uses less digits than its factorization.

42524642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21262323.

The product of its digits is 15360, while the sum is 29.

The square root of 42524642 is about 6521.0920864530. The cubic root of 42524642 is about 349.0440362274.

The spelling of 42524642 in words is "forty-two million, five hundred twenty-four thousand, six hundred forty-two".