129102 has 8 divisors (see below), whose sum is σ = 258216. Its totient is φ = 43032.

The previous prime is 129097. The next prime is 129113. The reversal of 129102 is 201921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

129102 is an admirable number.

It is a plaindrome in base 13.

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, 10753 + ... + 10764.

It is an arithmetic number, because the mean of its divisors is an integer number (32277).

2¹²⁹¹⁰² is an apocalyptic number.

129102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129102 is a wasteful number, since it uses less digits than its factorization.

129102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21522.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 129102 is about 359.3076676054. The cubic root of 129102 is about 50.5410573534.

It can be divided in two parts, 129 and 102, that added together give a triangular number (231 = T₂₁).

The spelling of 129102 in words is "one hundred twenty-nine thousand, one hundred two".