129319146 has 128 divisors (see below), whose sum is σ = 329978880. Its totient is φ = 37195200.

The previous prime is 129319117. The next prime is 129319163. The reversal of 129319146 is 641913921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 129319146.

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, 1558021 + ... + 1558103.

It is an arithmetic number, because the mean of its divisors is an integer number (2577960).

Almost surely, 2^129319146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129319146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164989440).

129319146 is an abundant number, since it is smaller than the sum of its proper divisors (200659734).

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

129319146 is a wasteful number, since it uses less digits than its factorization.

129319146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 203 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 129319146 is about 11371.8576318911. The cubic root of 129319146 is about 505.6937770236.

The spelling of 129319146 in words is "one hundred twenty-nine million, three hundred nineteen thousand, one hundred forty-six".