129073152 has 128 divisors (see below), whose sum is σ = 374335920. Its totient is φ = 39321600.

The previous prime is 129073151. The next prime is 129073177. The reversal of 129073152 is 251370921.

It is a tau number, because it is divible by the number of its divisors (128).

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129073151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277902 + ... + 1278002.

Almost surely, 2^129073152 is an apocalyptic number.

129073152 is a gapful number since it is divisible by the number (12) 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 129073152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187167960).

129073152 is an abundant number, since it is smaller than the sum of its proper divisors (245262768).

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

129073152 is an equidigital number, since it uses as much as digits as its factorization.

129073152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 129073152 is about 11361.0365724260. The cubic root of 129073152 is about 505.3729258589.

The spelling of 129073152 in words is "one hundred twenty-nine million, seventy-three thousand, one hundred fifty-two".