129601080 has 384 divisors, whose sum is σ = 525312000. Its totient is φ = 28304640.

The previous prime is 129601063. The next prime is 129601091. The reversal of 129601080 is 80106921.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1640481 + ... + 1640559.

It is an arithmetic number, because the mean of its divisors is an integer number (1368000).

Almost surely, 2^129601080 is an apocalyptic number.

129601080 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 129601080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262656000).

129601080 is an abundant number, since it is smaller than the sum of its proper divisors (395710920).

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

129601080 is a wasteful number, since it uses less digits than its factorization.

129601080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 129601080 is about 11384.2470106722. The cubic root of 129601080 is about 506.0610048983.

The spelling of 129601080 in words is "one hundred twenty-nine million, six hundred one thousand, eighty".