442523312305 has 4 divisors (see below), whose sum is σ = 531027974772. Its totient is φ = 354018649840.

The previous prime is 442523312263. The next prime is 442523312333. The reversal of 442523312305 is 503213325244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 273537368064 + 168985944241 = 523008^2 + 411079^2 .

It is a de Polignac number, because none of the positive numbers 2^k-442523312305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44252331226 + ... + 44252331235.

It is an arithmetic number, because the mean of its divisors is an integer number (132756993693).

Almost surely, 2^442523312305 is an apocalyptic number.

It is an amenable number.

442523312305 is a deficient number, since it is larger than the sum of its proper divisors (88504662467).

442523312305 is an equidigital number, since it uses as much as digits as its factorization.

442523312305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88504662466.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 442523312305 its reverse (503213325244), we get a palindrome (945736637549).

The spelling of 442523312305 in words is "four hundred forty-two billion, five hundred twenty-three million, three hundred twelve thousand, three hundred five".