42256135679 has 8 divisors (see below), whose sum is σ = 44485943040. Its totient is φ = 40026908376.

The previous prime is 42256135673. The next prime is 42256135703. The reversal of 42256135679 is 97653165224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42256135679 - 2⁸ = 42256135423 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 (42256135673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8714 + ... + 290840.

It is an arithmetic number, because the mean of its divisors is an integer number (5560742880).

Almost surely, 2^42256135679 is an apocalyptic number.

42256135679 is a deficient number, since it is larger than the sum of its proper divisors (2229807361).

42256135679 is a wasteful number, since it uses less digits than its factorization.

42256135679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290029.

The product of its digits is 2721600, while the sum is 50.

The spelling of 42256135679 in words is "forty-two billion, two hundred fifty-six million, one hundred thirty-five thousand, six hundred seventy-nine".