442304023 has 16 divisors (see below), whose sum is σ = 518918400. Its totient is φ = 369086400.

The previous prime is 442304003. The next prime is 442304029. The reversal of 442304023 is 320403244.

It is a cyclic number.

It is not a de Polignac number, because 442304023 - 2²⁵ = 408749591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442303985 and 442304003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442304029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162528 + ... + 165226.

It is an arithmetic number, because the mean of its divisors is an integer number (32432400).

Almost surely, 2^442304023 is an apocalyptic number.

442304023 is a deficient number, since it is larger than the sum of its proper divisors (76614377).

442304023 is a wasteful number, since it uses less digits than its factorization.

442304023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 442304023 is about 21031.0252484276. The cubic root of 442304023 is about 761.9157709845.

Adding to 442304023 its reverse (320403244), we get a palindrome (762707267).

The spelling of 442304023 in words is "four hundred forty-two million, three hundred four thousand, twenty-three".