442421230323 has 4 divisors (see below), whose sum is σ = 589894973768. Its totient is φ = 294947486880.

The previous prime is 442421230319. The next prime is 442421230393. The reversal of 442421230323 is 323032124244.

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

It is not a de Polignac number, because 442421230323 - 2² = 442421230319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442421230393) 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, 73736871718 + ... + 73736871723.

It is an arithmetic number, because the mean of its divisors is an integer number (147473743442).

Almost surely, 2^442421230323 is an apocalyptic number.

442421230323 is a deficient number, since it is larger than the sum of its proper divisors (147473743445).

442421230323 is a wasteful number, since it uses less digits than its factorization.

442421230323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147473743444.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 442421230323 its reverse (323032124244), we get a palindrome (765453354567).

The spelling of 442421230323 in words is "four hundred forty-two billion, four hundred twenty-one million, two hundred thirty thousand, three hundred twenty-three".