442041323 has 4 divisors (see below), whose sum is σ = 445268040. Its totient is φ = 438814608.

The previous prime is 442041311. The next prime is 442041329. The reversal of 442041323 is 323140244.

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 442041323 - 2²⁸ = 173605867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442041329) 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, 1613153 + ... + 1613426.

It is an arithmetic number, because the mean of its divisors is an integer number (111317010).

Almost surely, 2^442041323 is an apocalyptic number.

442041323 is a deficient number, since it is larger than the sum of its proper divisors (3226717).

442041323 is a wasteful number, since it uses less digits than its factorization.

442041323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226716.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 442041323 is about 21024.7787859944. The cubic root of 442041323 is about 761.7648982046.

Adding to 442041323 its reverse (323140244), we get a palindrome (765181567).

The spelling of 442041323 in words is "four hundred forty-two million, forty-one thousand, three hundred twenty-three".