442644620003421 has 32 divisors (see below), whose sum is σ = 644938638898176. Its totient is φ = 267814529040000.

The previous prime is 442644620003413. The next prime is 442644620003431. The reversal of 442644620003421 is 124300026446244.

It is not a de Polignac number, because 442644620003421 - 2³ = 442644620003413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442644620003431) 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, 649606720 + ... + 650287766.

It is an arithmetic number, because the mean of its divisors is an integer number (20154332465568).

Almost surely, 2^{442644620003421} is an apocalyptic number.

It is an amenable number.

442644620003421 is a deficient number, since it is larger than the sum of its proper divisors (202294018894755).

442644620003421 is a wasteful number, since it uses less digits than its factorization.

442644620003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714433.

The product of its (nonzero) digits is 884736, while the sum is 42.

Adding to 442644620003421 its reverse (124300026446244), we get a palindrome (566944646449665).

The spelling of 442644620003421 in words is "four hundred forty-two trillion, six hundred forty-four billion, six hundred twenty million, three thousand, four hundred twenty-one".