102135860 has 12 divisors (see below), whose sum is σ = 214485348. Its totient is φ = 40854336.

The previous prime is 102135857. The next prime is 102135871. The reversal of 102135860 is 68531201.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 64705936 = 6118^2 + 8044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2553377 + ... + 2553416.

It is an arithmetic number, because the mean of its divisors is an integer number (17873779).

Almost surely, 2^102135860 is an apocalyptic number.

102135860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102135860 is an abundant number, since it is smaller than the sum of its proper divisors (112349488).

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

102135860 is a wasteful number, since it uses less digits than its factorization.

102135860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106802 (or 5106800 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 102135860 is about 10106.2287723958. The cubic root of 102135860 is about 467.4402260885.

The spelling of 102135860 in words is "one hundred two million, one hundred thirty-five thousand, eight hundred sixty".