442431312000421 has 4 divisors (see below), whose sum is σ = 442436140494144. Its totient is φ = 442426483506700.

The previous prime is 442431312000323. The next prime is 442431312000487. The reversal of 442431312000421 is 124000213134244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442431312000421 - 2¹⁵ = 442431311967653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442431312070421) 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, 2414109415 + ... + 2414292676.

It is an arithmetic number, because the mean of its divisors is an integer number (110609035123536).

Almost surely, 2^{442431312000421} is an apocalyptic number.

It is an amenable number.

442431312000421 is a deficient number, since it is larger than the sum of its proper divisors (4828493723).

442431312000421 is an equidigital number, since it uses as much as digits as its factorization.

442431312000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828493722.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 442431312000421 its reverse (124000213134244), we get a palindrome (566431525134665).

The spelling of 442431312000421 in words is "four hundred forty-two trillion, four hundred thirty-one billion, three hundred twelve million, four hundred twenty-one", and thus it is an aban number.