442033634421 has 12 divisors (see below), whose sum is σ = 638743548300. Its totient is φ = 294573464640.

The previous prime is 442033634389. The next prime is 442033634447. The reversal of 442033634421 is 124436330244.

442033634421 is a `hidden beast` number, since 4 + 4 + 203 + 3 + 6 + 3 + 442 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 348526110321 + 93507524100 = 590361^2 + 305790^2 .

It is not a de Polignac number, because 442033634421 - 2⁵ = 442033634389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442033634461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9611200 + ... + 9657081.

It is an arithmetic number, because the mean of its divisors is an integer number (53228629025).

Almost surely, 2^442033634421 is an apocalyptic number.

It is an amenable number.

442033634421 is a deficient number, since it is larger than the sum of its proper divisors (196709913879).

442033634421 is a wasteful number, since it uses less digits than its factorization.

442033634421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19270836 (or 19270833 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 442033634421 its reverse (124436330244), we get a palindrome (566469964665).

The spelling of 442033634421 in words is "four hundred forty-two billion, thirty-three million, six hundred thirty-four thousand, four hundred twenty-one".