342937821891285 has 24 divisors (see below), whose sum is σ = 605641134514104. Its totient is φ = 179449225038720.

The previous prime is 342937821891257. The next prime is 342937821891299. The reversal of 342937821891285 is 582198128739243.

342937821891285 is a `hidden beast` number, since 3 + 4 + 2 + 93 + 7 + 82 + 189 + 1 + 285 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 102691510877124 + 240246311014161 = 10133682^2 + 15499881^2 .

It is not a de Polignac number, because 342937821891285 - 2¹¹ = 342937821889237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71894719186 + ... + 71894723955.

It is an arithmetic number, because the mean of its divisors is an integer number (25235047271421).

Almost surely, 2^{342937821891285} is an apocalyptic number.

It is an amenable number.

342937821891285 is a deficient number, since it is larger than the sum of its proper divisors (262703312622819).

342937821891285 is a wasteful number, since it uses less digits than its factorization.

342937821891285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143789443205 (or 143789443202 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 72.

The spelling of 342937821891285 in words is "three hundred forty-two trillion, nine hundred thirty-seven billion, eight hundred twenty-one million, eight hundred ninety-one thousand, two hundred eighty-five".