42031333161 has 16 divisors (see below), whose sum is σ = 62910590400. Its totient is φ = 27732011904.

The previous prime is 42031333153. The next prime is 42031333181. The reversal of 42031333161 is 16133313024.

42031333161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42031333161 - 2³ = 42031333153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42031333111) 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, 8021691 + ... + 8026928.

It is an arithmetic number, because the mean of its divisors is an integer number (3931911900).

Almost surely, 2^42031333161 is an apocalyptic number.

It is an amenable number.

42031333161 is a deficient number, since it is larger than the sum of its proper divisors (20879257239).

42031333161 is a wasteful number, since it uses less digits than its factorization.

42031333161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16048725 (or 16048719 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 42031333161 its reverse (16133313024), we get a palindrome (58164646185).

The spelling of 42031333161 in words is "forty-two billion, thirty-one million, three hundred thirty-three thousand, one hundred sixty-one".