129014240 has 48 divisors (see below), whose sum is σ = 307041840. Its totient is φ = 51225600.

The previous prime is 129014213. The next prime is 129014261. The reversal of 129014240 is 42410921.

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, 19340 + ... + 25140.

It is an arithmetic number, because the mean of its divisors is an integer number (6396705).

Almost surely, 2^129014240 is an apocalyptic number.

129014240 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 129014240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153520920).

129014240 is an abundant number, since it is smaller than the sum of its proper divisors (178027600).

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

129014240 is a wasteful number, since it uses less digits than its factorization.

129014240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955 (or 5947 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 129014240 is about 11358.4435553468. The cubic root of 129014240 is about 505.2960261574.

The spelling of 129014240 in words is "one hundred twenty-nine million, fourteen thousand, two hundred forty".