442255111217 has 8 divisors (see below), whose sum is σ = 447253659720. Its totient is φ = 437257216000.

The previous prime is 442255111213. The next prime is 442255111261. The reversal of 442255111217 is 712111552244.

It can be written as a sum of positive squares in 4 ways, for example, as 77105627041 + 365149484176 = 277679^2 + 604276^2 .

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 442255111217 - 2² = 442255111213 is a prime.

It is a super-2 number, since 2×442255111217² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442255111213) 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, 1268813 + ... + 1579365.

It is an arithmetic number, because the mean of its divisors is an integer number (55906707465).

Almost surely, 2^442255111217 is an apocalyptic number.

It is an amenable number.

442255111217 is a deficient number, since it is larger than the sum of its proper divisors (4998548503).

442255111217 is a wasteful number, since it uses less digits than its factorization.

442255111217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326643.

The product of its digits is 22400, while the sum is 35.

The spelling of 442255111217 in words is "four hundred forty-two billion, two hundred fifty-five million, one hundred eleven thousand, two hundred seventeen".