442111423213 has 2 divisors, whose sum is σ = 442111423214. Its totient is φ = 442111423212.

The previous prime is 442111423177. The next prime is 442111423267. The reversal of 442111423213 is 312324111244.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430773006889 + 11338416324 = 656333^2 + 106482^2 .

It is a cyclic number.

It is not a de Polignac number, because 442111423213 - 2²⁵ = 442077868781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442111420213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221055711606 + 221055711607.

It is an arithmetic number, because the mean of its divisors is an integer number (221055711607).

Almost surely, 2^442111423213 is an apocalyptic number.

It is an amenable number.

442111423213 is a deficient number, since it is larger than the sum of its proper divisors (1).

442111423213 is an equidigital number, since it uses as much as digits as its factorization.

442111423213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

Adding to 442111423213 its reverse (312324111244), we get a palindrome (754435534457).

The spelling of 442111423213 in words is "four hundred forty-two billion, one hundred eleven million, four hundred twenty-three thousand, two hundred thirteen".