129210960 has 80 divisors (see below), whose sum is σ = 402474240. Its totient is φ = 34291200.

The previous prime is 129210947. The next prime is 129210989. The reversal of 129210960 is 69012921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53785 + ... + 56135.

It is an arithmetic number, because the mean of its divisors is an integer number (5030928).

Almost surely, 2^129210960 is an apocalyptic number.

129210960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129210960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201237120).

129210960 is an abundant number, since it is smaller than the sum of its proper divisors (273263280).

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

129210960 is a wasteful number, since it uses less digits than its factorization.

129210960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 129210960 is about 11367.0998939923. The cubic root of 129210960 is about 505.5527196682.

The spelling of 129210960 in words is "one hundred twenty-nine million, two hundred ten thousand, nine hundred sixty".