442442134442221 has 8 divisors (see below), whose sum is σ = 456715593345024. Its totient is φ = 428168746288560.

The previous prime is 442442134442183. The next prime is 442442134442263. The reversal of 442442134442221 is 122244431244244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442442134442221 - 2³¹ = 442439986958573 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 (442442134442291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4829821 + ... + 30136546.

It is an arithmetic number, because the mean of its divisors is an integer number (57089449168128).

Almost surely, 2^{442442134442221} is an apocalyptic number.

It is an amenable number.

442442134442221 is a deficient number, since it is larger than the sum of its proper divisors (14273458902803).

442442134442221 is a wasteful number, since it uses less digits than its factorization.

442442134442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35374571.

The product of its digits is 1572864, while the sum is 43.

Adding to 442442134442221 its reverse (122244431244244), we get a palindrome (564686565686465).

The spelling of 442442134442221 in words is "four hundred forty-two trillion, four hundred forty-two billion, one hundred thirty-four million, four hundred forty-two thousand, two hundred twenty-one".