42113433531 has 16 divisors (see below), whose sum is σ = 61495499520. Its totient is φ = 25476704160.

The previous prime is 42113433517. The next prime is 42113433539. The reversal of 42113433531 is 13533431124.

It is a happy number.

It is not a de Polignac number, because 42113433531 - 2⁷ = 42113433403 is a prime.

It is a super-2 number, since 2×42113433531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42113433539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9148815 + ... + 9153416.

It is an arithmetic number, because the mean of its divisors is an integer number (3843468720).

Almost surely, 2^42113433531 is an apocalyptic number.

42113433531 is a deficient number, since it is larger than the sum of its proper divisors (19382065989).

42113433531 is a wasteful number, since it uses less digits than its factorization.

42113433531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18302306.

The product of its digits is 12960, while the sum is 30.

Adding to 42113433531 its reverse (13533431124), we get a palindrome (55646864655).

The spelling of 42113433531 in words is "forty-two billion, one hundred thirteen million, four hundred thirty-three thousand, five hundred thirty-one".