129309024 has 48 divisors (see below), whose sum is σ = 365550192. Its totient is φ = 39787008.

The previous prime is 129308983. The next prime is 129309049. The reversal of 129309024 is 420903921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 129308982 and 129309000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50559 + ... + 53054.

It is an arithmetic number, because the mean of its divisors is an integer number (7615629).

Almost surely, 2^129309024 is an apocalyptic number.

It is an amenable number.

129309024 is an abundant number, since it is smaller than the sum of its proper divisors (236241168).

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

129309024 is a wasteful number, since it uses less digits than its factorization.

129309024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103639 (or 103631 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 129309024 is about 11371.4125771603. The cubic root of 129309024 is about 505.6805828805.

The spelling of 129309024 in words is "one hundred twenty-nine million, three hundred nine thousand, twenty-four".