102685108842 has 12 divisors (see below), whose sum is σ = 222484402530. Its totient is φ = 34228369608.

The previous prime is 102685108837. The next prime is 102685108853. The reversal of 102685108842 is 248801586201.

102685108842 is a `hidden beast` number, since 10 + 2 + 6 + 8 + 510 + 88 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102681152721 + 3956121 = 320439^2 + 1989^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2852364117 + ... + 2852364152.

Almost surely, 2^102685108842 is an apocalyptic number.

102685108842 is an abundant number, since it is smaller than the sum of its proper divisors (119799293688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102685108842 is a wasteful number, since it uses less digits than its factorization.

102685108842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704728277 (or 5704728274 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 102685108842 in words is "one hundred two billion, six hundred eighty-five million, one hundred eight thousand, eight hundred forty-two".