42075685865 has 8 divisors (see below), whose sum is σ = 53460871560. Its totient is φ = 31680516352.

The previous prime is 42075685811. The next prime is 42075685871. The reversal of 42075685865 is 56858657024.

42075685865 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 4 ways, for example, as 21783398464 + 20292287401 = 147592^2 + 142451^2 .

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 42075685865 - 2⁸ = 42075685609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42075685865.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247503950 + ... + 247504119.

It is an arithmetic number, because the mean of its divisors is an integer number (6682608945).

Almost surely, 2^42075685865 is an apocalyptic number.

It is an amenable number.

42075685865 is a deficient number, since it is larger than the sum of its proper divisors (11385185695).

42075685865 is a wasteful number, since it uses less digits than its factorization.

42075685865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495008091.

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 42075685865 in words is "forty-two billion, seventy-five million, six hundred eighty-five thousand, eight hundred sixty-five".