442404540325523 has 4 divisors (see below), whose sum is σ = 465688989816360. Its totient is φ = 419120090834688.

The previous prime is 442404540325513. The next prime is 442404540325543. The reversal of 442404540325523 is 325523045404244.

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 442404540325523 - 2³⁶ = 442335820848787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442404540325513) 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, 11642224745390 + ... + 11642224745427.

It is an arithmetic number, because the mean of its divisors is an integer number (116422247454090).

Almost surely, 2^{442404540325523} is an apocalyptic number.

442404540325523 is a deficient number, since it is larger than the sum of its proper divisors (23284449490837).

442404540325523 is a wasteful number, since it uses less digits than its factorization.

442404540325523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23284449490836.

The product of its (nonzero) digits is 9216000, while the sum is 47.

Adding to 442404540325523 its reverse (325523045404244), we get a palindrome (767927585729767).

The spelling of 442404540325523 in words is "four hundred forty-two trillion, four hundred four billion, five hundred forty million, three hundred twenty-five thousand, five hundred twenty-three".