42109138175 has 12 divisors (see below), whose sum is σ = 56231895720. Its totient is φ = 31095978720.

The previous prime is 42109138153. The next prime is 42109138177. The reversal of 42109138175 is 57183190124.

It is not a de Polignac number, because 42109138175 - 2²⁶ = 42042029311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42109138177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64782965 + ... + 64783614.

It is an arithmetic number, because the mean of its divisors is an integer number (4685991310).

Almost surely, 2^42109138175 is an apocalyptic number.

42109138175 is a deficient number, since it is larger than the sum of its proper divisors (14122757545).

42109138175 is a wasteful number, since it uses less digits than its factorization.

42109138175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129566602 (or 129566597 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 42109138175 in words is "forty-two billion, one hundred nine million, one hundred thirty-eight thousand, one hundred seventy-five".