102523134 has 32 divisors (see below), whose sum is σ = 235547136. Its totient is φ = 29141280.

The previous prime is 102523133. The next prime is 102523139. The reversal of 102523134 is 431325201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 102523134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102523133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (7360848).

Almost surely, 2^102523134 is an apocalyptic number.

102523134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

102523134 is an abundant number, since it is smaller than the sum of its proper divisors (133024002).

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

102523134 is a wasteful number, since it uses less digits than its factorization.

102523134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12600.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 102523134 is about 10125.3708080248. The cubic root of 102523134 is about 468.0302869580.

Adding to 102523134 its reverse (431325201), we get a palindrome (533848335).

The spelling of 102523134 in words is "one hundred two million, five hundred twenty-three thousand, one hundred thirty-four".