102136871 has 4 divisors (see below), whose sum is σ = 102621144. Its totient is φ = 101652600.

The previous prime is 102136861. The next prime is 102136873. The reversal of 102136871 is 178631201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102136871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102136873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241820 + ... + 242241.

It is an arithmetic number, because the mean of its divisors is an integer number (25655286).

Almost surely, 2^102136871 is an apocalyptic number.

102136871 is a deficient number, since it is larger than the sum of its proper divisors (484273).

102136871 is an equidigital number, since it uses as much as digits as its factorization.

102136871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484272.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 102136871 is about 10106.2787909299. The cubic root of 102136871 is about 467.4417684150.

The spelling of 102136871 in words is "one hundred two million, one hundred thirty-six thousand, eight hundred seventy-one".