442440013403 has 4 divisors (see below), whose sum is σ = 442725644400. Its totient is φ = 442154382408.

The previous prime is 442440013333. The next prime is 442440013427. The reversal of 442440013403 is 304310044244.

It is a happy number.

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 442440013403 - 2²⁰ = 442438964827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442440018403) 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, 142813175 + ... + 142816272.

It is an arithmetic number, because the mean of its divisors is an integer number (110681411100).

Almost surely, 2^442440013403 is an apocalyptic number.

442440013403 is a deficient number, since it is larger than the sum of its proper divisors (285630997).

442440013403 is a wasteful number, since it uses less digits than its factorization.

442440013403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285630996.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 442440013403 its reverse (304310044244), we get a palindrome (746750057647).

The spelling of 442440013403 in words is "four hundred forty-two billion, four hundred forty million, thirteen thousand, four hundred three".