39042072137 has 4 divisors (see below), whose sum is σ = 39047066820. Its totient is φ = 39037077456.

The previous prime is 39042072127. The next prime is 39042072151. The reversal of 39042072137 is 73127024093.

39042072137 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6964903936 + 32077168201 = 83456^2 + 179101^2 .

It is a cyclic number.

It is not a de Polignac number, because 39042072137 - 2⁶ = 39042072073 is a prime.

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 39042072137.

It is not an unprimeable number, because it can be changed into a prime (39042072107) 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, 2485598 + ... + 2501255.

It is an arithmetic number, because the mean of its divisors is an integer number (9761766705).

Almost surely, 2^39042072137 is an apocalyptic number.

It is an amenable number.

39042072137 is a deficient number, since it is larger than the sum of its proper divisors (4994683).

39042072137 is an equidigital number, since it uses as much as digits as its factorization.

39042072137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994682.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 39042072137 in words is "thirty-nine billion, forty-two million, seventy-two thousand, one hundred thirty-seven".