442371242142721 has 4 divisors (see below), whose sum is σ = 451783396230912. Its totient is φ = 432959088054532.

The previous prime is 442371242142719. The next prime is 442371242142733. The reversal of 442371242142721 is 127241242173244.

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 442371242142721 - 2¹ = 442371242142719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442371242142421) 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, 4706077044025 + ... + 4706077044118.

It is an arithmetic number, because the mean of its divisors is an integer number (112945849057728).

Almost surely, 2^{442371242142721} is an apocalyptic number.

It is an amenable number.

442371242142721 is a deficient number, since it is larger than the sum of its proper divisors (9412154088191).

442371242142721 is an equidigital number, since it uses as much as digits as its factorization.

442371242142721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412154088190.

The product of its digits is 1204224, while the sum is 46.

The spelling of 442371242142721 in words is "four hundred forty-two trillion, three hundred seventy-one billion, two hundred forty-two million, one hundred forty-two thousand, seven hundred twenty-one".