102542171994 has 32 divisors (see below), whose sum is σ = 229236013440. Its totient is φ = 33976046016.

The previous prime is 102542171989. The next prime is 102542172017. The reversal of 102542171994 is 499171245201.

102542171994 is a `hidden beast` number, since 1 + 0 + 2 + 542 + 1 + 7 + 19 + 94 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5676399 + ... + 5694434.

It is an arithmetic number, because the mean of its divisors is an integer number (7163625420).

Almost surely, 2^102542171994 is an apocalyptic number.

102542171994 is an abundant number, since it is smaller than the sum of its proper divisors (126693841446).

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

102542171994 is a wasteful number, since it uses less digits than its factorization.

102542171994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11371011 (or 11371005 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 102542171994 in words is "one hundred two billion, five hundred forty-two million, one hundred seventy-one thousand, nine hundred ninety-four".