442403323 has 8 divisors (see below), whose sum is σ = 462379680. Its totient is φ = 422741760.

The previous prime is 442403303. The next prime is 442403327. The reversal of 442403323 is 323304244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442403323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442403327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75823 + ... + 81448.

It is an arithmetic number, because the mean of its divisors is an integer number (57797460).

Almost surely, 2^442403323 is an apocalyptic number.

442403323 is a deficient number, since it is larger than the sum of its proper divisors (19976357).

442403323 is a wasteful number, since it uses less digits than its factorization.

442403323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157397.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 442403323 is about 21033.3859138276. The cubic root of 442403323 is about 761.9727849921.

Adding to 442403323 its reverse (323304244), we get a palindrome (765707567).

The spelling of 442403323 in words is "four hundred forty-two million, four hundred three thousand, three hundred twenty-three".