102805134 has 16 divisors (see below), whose sum is σ = 205822080. Its totient is φ = 34233080.

The previous prime is 102805123. The next prime is 102805139. The reversal of 102805134 is 431508201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102805139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124 + ... + 14495.

It is an arithmetic number, because the mean of its divisors is an integer number (12863880).

Almost surely, 2^102805134 is an apocalyptic number.

102805134 is an abundant number, since it is smaller than the sum of its proper divisors (103016946).

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

102805134 is a wasteful number, since it uses less digits than its factorization.

102805134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 102805134 is about 10139.2866612992. The cubic root of 102805134 is about 468.4590152791.

The spelling of 102805134 in words is "one hundred two million, eight hundred five thousand, one hundred thirty-four".