129642876 has 192 divisors, whose sum is σ = 391910400. Its totient is φ = 36691200.

The previous prime is 129642869. The next prime is 129642911. The reversal of 129642876 is 678246921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1825921 + ... + 1825991.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^129642876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129642876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195955200).

129642876 is an abundant number, since it is smaller than the sum of its proper divisors (262267524).

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

129642876 is a wasteful number, since it uses less digits than its factorization.

129642876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 169 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 129642876 is about 11386.0825572275. The cubic root of 129642876 is about 506.1154001559.

The spelling of 129642876 in words is "one hundred twenty-nine million, six hundred forty-two thousand, eight hundred seventy-six".