42056686239 has 16 divisors (see below), whose sum is σ = 56154495744. Its totient is φ = 27998366400.

The previous prime is 42056686183. The next prime is 42056686261. The reversal of 42056686239 is 93268665024.

It is a de Polignac number, because none of the positive numbers 2^k-42056686239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42056686191 and 42056686200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42056686039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9575734 + ... + 9580124.

It is an arithmetic number, because the mean of its divisors is an integer number (3509655984).

Almost surely, 2^42056686239 is an apocalyptic number.

42056686239 is a deficient number, since it is larger than the sum of its proper divisors (14097809505).

42056686239 is a wasteful number, since it uses less digits than its factorization.

42056686239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 42056686239 in words is "forty-two billion, fifty-six million, six hundred eighty-six thousand, two hundred thirty-nine".