42002113031 has 4 divisors (see below), whose sum is σ = 42024539952. Its totient is φ = 41979686112.

The previous prime is 42002113019. The next prime is 42002113033. The reversal of 42002113031 is 13031120024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42002113031 - 2²² = 41997918727 is a prime.

It is a super-2 number, since 2×42002113031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002113033) 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, 11210651 + ... + 11214396.

It is an arithmetic number, because the mean of its divisors is an integer number (10506134988).

Almost surely, 2^42002113031 is an apocalyptic number.

42002113031 is a deficient number, since it is larger than the sum of its proper divisors (22426921).

42002113031 is a wasteful number, since it uses less digits than its factorization.

42002113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22426920.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 42002113031 its reverse (13031120024), we get a palindrome (55033233055).

The spelling of 42002113031 in words is "forty-two billion, two million, one hundred thirteen thousand, thirty-one".