442431100023021 has 12 divisors (see below), whose sum is σ = 641613228721920. Its totient is φ = 293778950877000.

The previous prime is 442431100023013. The next prime is 442431100023023. The reversal of 442431100023021 is 120320001134244.

442431100023021 is a `hidden beast` number, since 4 + 4 + 243 + 110 + 0 + 0 + 2 + 302 + 1 = 666.

It is not a de Polignac number, because 442431100023021 - 2³ = 442431100023013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442431100023023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97926314701 + ... + 97926319218.

It is an arithmetic number, because the mean of its divisors is an integer number (53467769060160).

Almost surely, 2^{442431100023021} is an apocalyptic number.

It is an amenable number.

442431100023021 is a deficient number, since it is larger than the sum of its proper divisors (199182128698899).

442431100023021 is a wasteful number, since it uses less digits than its factorization.

442431100023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195852634176 (or 195852634173 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 442431100023021 its reverse (120320001134244), we get a palindrome (562751101157265).

The spelling of 442431100023021 in words is "four hundred forty-two trillion, four hundred thirty-one billion, one hundred million, twenty-three thousand, twenty-one".