442441431410021 has 4 divisors (see below), whose sum is σ = 442441478721312. Its totient is φ = 442441384098732.

The previous prime is 442441431409949. The next prime is 442441431410177. The reversal of 442441431410021 is 120014134144244.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442441431410021 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 (442441431410221) 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, 4407425 + ... + 30071718.

It is an arithmetic number, because the mean of its divisors is an integer number (110610369680328).

Almost surely, 2^{442441431410021} is an apocalyptic number.

It is an amenable number.

442441431410021 is a deficient number, since it is larger than the sum of its proper divisors (47311291).

442441431410021 is a wasteful number, since it uses less digits than its factorization.

442441431410021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47311290.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 442441431410021 its reverse (120014134144244), we get a palindrome (562455565554265).

The spelling of 442441431410021 in words is "four hundred forty-two trillion, four hundred forty-one billion, four hundred thirty-one million, four hundred ten thousand, twenty-one".