129514140 has 240 divisors, whose sum is σ = 476163072. Its totient is φ = 28973376.

The previous prime is 129514129. The next prime is 129514141. The reversal of 129514140 is 41415921.

129514140 is a `hidden beast` number, since 1 + 2 + 9 + 514 + 140 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129514141) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2755597 + ... + 2755643.

Almost surely, 2^129514140 is an apocalyptic number.

129514140 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 129514140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238081536).

129514140 is an abundant number, since it is smaller than the sum of its proper divisors (346648932).

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

129514140 is an frugal number, since it uses more digits than its factorization.

129514140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 129514140 is about 11380.4279357149. The cubic root of 129514140 is about 505.9478196646.

The spelling of 129514140 in words is "one hundred twenty-nine million, five hundred fourteen thousand, one hundred forty".