42521534589 has 4 divisors (see below), whose sum is σ = 56695379456. Its totient is φ = 28347689724.

The previous prime is 42521534581. The next prime is 42521534603. The reversal of 42521534589 is 98543512524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42521534589 - 2³ = 42521534581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521534581) 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, 7086922429 + ... + 7086922434.

It is an arithmetic number, because the mean of its divisors is an integer number (14173844864).

Almost surely, 2^42521534589 is an apocalyptic number.

It is an amenable number.

42521534589 is a deficient number, since it is larger than the sum of its proper divisors (14173844867).

42521534589 is a wasteful number, since it uses less digits than its factorization.

42521534589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14173844866.

The product of its digits is 1728000, while the sum is 48.

The spelling of 42521534589 in words is "forty-two billion, five hundred twenty-one million, five hundred thirty-four thousand, five hundred eighty-nine".