42236526161 has 4 divisors (see below), whose sum is σ = 42239913012. Its totient is φ = 42233139312.

The previous prime is 42236526133. The next prime is 42236526179. The reversal of 42236526161 is 16162563224.

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 17800896400 + 24435629761 = 133420^2 + 156319^2 .

It is a cyclic number.

It is not a de Polignac number, because 42236526161 - 2⁶ = 42236526097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42236526181) 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, 1674650 + ... + 1699683.

It is an arithmetic number, because the mean of its divisors is an integer number (10559978253).

Almost surely, 2^42236526161 is an apocalyptic number.

It is an amenable number.

42236526161 is a deficient number, since it is larger than the sum of its proper divisors (3386851).

42236526161 is a wasteful number, since it uses less digits than its factorization.

42236526161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386850.

The product of its digits is 103680, while the sum is 38.

The spelling of 42236526161 in words is "forty-two billion, two hundred thirty-six million, five hundred twenty-six thousand, one hundred sixty-one".