42231534 has 32 divisors (see below), whose sum is σ = 85954176. Its totient is φ = 13831200.

The previous prime is 42231499. The next prime is 42231559. The reversal of 42231534 is 43513224.

42231534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137409 + ... + 137715.

It is an arithmetic number, because the mean of its divisors is an integer number (2686068).

Almost surely, 2^42231534 is an apocalyptic number.

42231534 is an abundant number, since it is smaller than the sum of its proper divisors (43722642).

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

42231534 is a wasteful number, since it uses less digits than its factorization.

42231534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 2880, while the sum is 24.

The square root of 42231534 is about 6498.5793832191. The cubic root of 42231534 is about 348.2402390559.

Adding to 42231534 its reverse (43513224), we get a palindrome (85744758).

The spelling of 42231534 in words is "forty-two million, two hundred thirty-one thousand, five hundred thirty-four".