42256620535631 has 8 divisors (see below), whose sum is σ = 43160326965504. Its totient is φ = 41353106997400.

The previous prime is 42256620535621. The next prime is 42256620535757. The reversal of 42256620535631 is 13653502665224.

It is a happy number.

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 42256620535631 - 2⁶ = 42256620535567 is a prime.

It is a super-2 number, since 2×42256620535631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42256620535631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42256620535621) 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, 47780045 + ... + 48656406.

It is an arithmetic number, because the mean of its divisors is an integer number (5395040870688).

Almost surely, 2^{42256620535631} is an apocalyptic number.

42256620535631 is a deficient number, since it is larger than the sum of its proper divisors (903706429873).

42256620535631 is an equidigital number, since it uses as much as digits as its factorization.

42256620535631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96445821.

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 42256620535631 in words is "forty-two trillion, two hundred fifty-six billion, six hundred twenty million, five hundred thirty-five thousand, six hundred thirty-one".