129560 has 32 divisors (see below), whose sum is σ = 302400. Its totient is φ = 49920.

The previous prime is 129553. The next prime is 129581. The reversal of 129560 is 65921.

It is a congruent number.

It is an unprimeable number.

129560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (9450).

2¹²⁹⁵⁶⁰ is an apocalyptic number.

129560 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 129560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151200).

129560 is an abundant number, since it is smaller than the sum of its proper divisors (172840).

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

129560 is a wasteful number, since it uses less digits than its factorization.

129560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 129560 is about 359.9444401571. The cubic root of 129560 is about 50.6007530079.

The spelling of 129560 in words is "one hundred twenty-nine thousand, five hundred sixty".