442428907517 has 16 divisors (see below), whose sum is σ = 466736954112. Its totient is φ = 418876787520.

The previous prime is 442428907513. The next prime is 442428907589. The reversal of 442428907517 is 715709824244.

It is a cyclic number.

It is not a de Polignac number, because 442428907517 - 2² = 442428907513 is a prime.

It is a super-2 number, since 2×442428907517² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442428907513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434459 + ... + 1036152.

It is an arithmetic number, because the mean of its divisors is an integer number (29171059632).

Almost surely, 2^442428907517 is an apocalyptic number.

442428907517 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

442428907517 is a deficient number, since it is larger than the sum of its proper divisors (24308046595).

442428907517 is a wasteful number, since it uses less digits than its factorization.

442428907517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470868.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 442428907517 in words is "four hundred forty-two billion, four hundred twenty-eight million, nine hundred seven thousand, five hundred seventeen".