42239530 has 16 divisors (see below), whose sum is σ = 76948704. Its totient is φ = 16691920.

The previous prime is 42239503. The next prime is 42239539. The reversal of 42239530 is 3593224.

It is not an unprimeable number, because it can be changed into a prime (42239539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24616 + ... + 26275.

It is an arithmetic number, because the mean of its divisors is an integer number (4809294).

Almost surely, 2^42239530 is an apocalyptic number.

42239530 is a deficient number, since it is larger than the sum of its proper divisors (34709174).

42239530 is a wasteful number, since it uses less digits than its factorization.

42239530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50981.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 42239530 is about 6499.1945654827. The cubic root of 42239530 is about 348.2622159451.

The spelling of 42239530 in words is "forty-two million, two hundred thirty-nine thousand, five hundred thirty".