129009160 has 64 divisors (see below), whose sum is σ = 338544000. Its totient is φ = 44227008.

The previous prime is 129009119. The next prime is 129009161. The reversal of 129009160 is 61900921.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (129009161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9019 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (5289750).

Almost surely, 2^129009160 is an apocalyptic number.

129009160 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 129009160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169272000).

129009160 is an abundant number, since it is smaller than the sum of its proper divisors (209534840).

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

129009160 is an equidigital number, since it uses as much as digits as its factorization.

129009160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435 (or 9417 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 129009160 is about 11358.2199309575. The cubic root of 129009160 is about 505.2893939760.

The spelling of 129009160 in words is "one hundred twenty-nine million, nine thousand, one hundred sixty".