129351168 has 100 divisors (see below), whose sum is σ = 386202960. Its totient is φ = 43103232.

The previous prime is 129351143. The next prime is 129351179. The reversal of 129351168 is 861153921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39913 + ... + 43031.

Almost surely, 2^129351168 is an apocalyptic number.

129351168 is a gapful number since it is divisible by the number (18) 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 129351168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193101480).

129351168 is an abundant number, since it is smaller than the sum of its proper divisors (256851792).

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

129351168 is an frugal number, since it uses more digits than its factorization.

129351168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149 (or 3124 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 129351168 is about 11373.2654941314. The cubic root of 129351168 is about 505.7355135342.

The spelling of 129351168 in words is "one hundred twenty-nine million, three hundred fifty-one thousand, one hundred sixty-eight".