42056686237 has 4 divisors (see below), whose sum is σ = 42086749600. Its totient is φ = 42026622876.

The previous prime is 42056686183. The next prime is 42056686261. The reversal of 42056686237 is 73268665024.

42056686237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42056686237 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 (42056686267) 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, 15029583 + ... + 15032380.

It is an arithmetic number, because the mean of its divisors is an integer number (10521687400).

Almost surely, 2^42056686237 is an apocalyptic number.

It is an amenable number.

42056686237 is a deficient number, since it is larger than the sum of its proper divisors (30063363).

42056686237 is a wasteful number, since it uses less digits than its factorization.

42056686237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30063362.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 42056686237 in words is "forty-two billion, fifty-six million, six hundred eighty-six thousand, two hundred thirty-seven".