442524523 has 4 divisors (see below), whose sum is σ = 505742320. Its totient is φ = 379306728.

The previous prime is 442524517. The next prime is 442524527. The reversal of 442524523 is 325425244.

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 442524523 - 2⁵ = 442524491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442524527) 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, 31608888 + ... + 31608901.

It is an arithmetic number, because the mean of its divisors is an integer number (126435580).

Almost surely, 2^442524523 is an apocalyptic number.

442524523 is a deficient number, since it is larger than the sum of its proper divisors (63217797).

442524523 is an equidigital number, since it uses as much as digits as its factorization.

442524523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63217796.

The product of its digits is 38400, while the sum is 31.

The square root of 442524523 is about 21036.2668503706. The cubic root of 442524523 is about 762.0423615260.

Adding to 442524523 its reverse (325425244), we get a palindrome (767949767).

The spelling of 442524523 in words is "four hundred forty-two million, five hundred twenty-four thousand, five hundred twenty-three".