42359685842 has 32 divisors (see below), whose sum is σ = 67816148400. Its totient is φ = 19774863360.

The previous prime is 42359685827. The next prime is 42359685847. The reversal of 42359685842 is 24858695324.

42359685842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 39299494081 + 3060191761 = 198241^2 + 55319^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (42359685847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2328542 + ... + 2346662.

Almost surely, 2^42359685842 is an apocalyptic number.

42359685842 is a deficient number, since it is larger than the sum of its proper divisors (25456462558).

42359685842 is a wasteful number, since it uses less digits than its factorization.

42359685842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18686.

The product of its digits is 16588800, while the sum is 56.

The spelling of 42359685842 in words is "forty-two billion, three hundred fifty-nine million, six hundred eighty-five thousand, eight hundred forty-two".