42125524531 has 4 divisors (see below), whose sum is σ = 42126309792. Its totient is φ = 42124739272.

The previous prime is 42125524517. The next prime is 42125524541. The reversal of 42125524531 is 13542552124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42125524531 - 2²⁵ = 42091970099 is a prime.

It is a super-2 number, since 2×42125524531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42125524541) 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, 305755 + ... + 421588.

It is an arithmetic number, because the mean of its divisors is an integer number (10531577448).

Almost surely, 2^42125524531 is an apocalyptic number.

42125524531 is a deficient number, since it is larger than the sum of its proper divisors (785261).

42125524531 is an equidigital number, since it uses as much as digits as its factorization.

42125524531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785260.

The product of its digits is 48000, while the sum is 34.

The spelling of 42125524531 in words is "forty-two billion, one hundred twenty-five million, five hundred twenty-four thousand, five hundred thirty-one".