442512402321 has 32 divisors (see below), whose sum is σ = 681649665408. Its totient is φ = 252364144640.

The previous prime is 442512402271. The next prime is 442512402323. The reversal of 442512402321 is 123204215244.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 442512402321 - 2¹⁰ = 442512401297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442512402323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2897161 + ... + 3046073.

It is an arithmetic number, because the mean of its divisors is an integer number (21301552044).

Almost surely, 2^442512402321 is an apocalyptic number.

It is an amenable number.

442512402321 is a deficient number, since it is larger than the sum of its proper divisors (239137263087).

442512402321 is a wasteful number, since it uses less digits than its factorization.

442512402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154241.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 442512402321 its reverse (123204215244), we get a palindrome (565716617565).

The spelling of 442512402321 in words is "four hundred forty-two billion, five hundred twelve million, four hundred two thousand, three hundred twenty-one".