129925340 has 48 divisors (see below), whose sum is σ = 282906624. Its totient is φ = 50068800.

The previous prime is 129925337. The next prime is 129925379. The reversal of 129925340 is 43529921.

It is a self number, because there is not a number n which added to its sum of digits gives 129925340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227255 + ... + 227825.

It is an arithmetic number, because the mean of its divisors is an integer number (5893888).

Almost surely, 2^129925340 is an apocalyptic number.

129925340 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 129925340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141453312).

129925340 is an abundant number, since it is smaller than the sum of its proper divisors (152981284).

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

129925340 is a wasteful number, since it uses less digits than its factorization.

129925340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 129925340 is about 11398.4797231912. The cubic root of 129925340 is about 506.4827057993.

The spelling of 129925340 in words is "one hundred twenty-nine million, nine hundred twenty-five thousand, three hundred forty".