42578486239 has 4 divisors (see below), whose sum is σ = 42602314824. Its totient is φ = 42554657656.

The previous prime is 42578486207. The next prime is 42578486243. The reversal of 42578486239 is 93268487524.

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 42578486239 - 2⁵ = 42578486207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42578480239) 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, 11911612 + ... + 11915185.

It is an arithmetic number, because the mean of its divisors is an integer number (10650578706).

Almost surely, 2^42578486239 is an apocalyptic number.

42578486239 is a deficient number, since it is larger than the sum of its proper divisors (23828585).

42578486239 is a wasteful number, since it uses less digits than its factorization.

42578486239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23828584.

The product of its digits is 23224320, while the sum is 58.

The spelling of 42578486239 in words is "forty-two billion, five hundred seventy-eight million, four hundred eighty-six thousand, two hundred thirty-nine".