23420042113 has 4 divisors (see below), whose sum is σ = 25221583828. Its totient is φ = 21618500400.

The previous prime is 23420042083. The next prime is 23420042117. The reversal of 23420042113 is 31124002432.

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 11650395969 + 11769646144 = 107937^2 + 108488^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420042113 - 2²⁵ = 23386487681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23420042117) 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, 900770838 + ... + 900770863.

It is an arithmetic number, because the mean of its divisors is an integer number (6305395957).

Almost surely, 2^23420042113 is an apocalyptic number.

It is an amenable number.

23420042113 is a deficient number, since it is larger than the sum of its proper divisors (1801541715).

23420042113 is a wasteful number, since it uses less digits than its factorization.

23420042113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801541714.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 23420042113 its reverse (31124002432), we get a palindrome (54544044545).

The spelling of 23420042113 in words is "twenty-three billion, four hundred twenty million, forty-two thousand, one hundred thirteen".