129514240 has 36 divisors (see below), whose sum is σ = 310230144. Its totient is φ = 51805184.

The previous prime is 129514213. The next prime is 129514247. The reversal of 129514240 is 42415921.

It is a junction number, because it is equal to n+sod(n) for n = 129514199 and 129514208.

It is not an unprimeable number, because it can be changed into a prime (129514247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49312 + ... + 51871.

It is an arithmetic number, because the mean of its divisors is an integer number (8617504).

Almost surely, 2^129514240 is an apocalyptic number.

129514240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129514240 is an abundant number, since it is smaller than the sum of its proper divisors (180715904).

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

129514240 is an equidigital number, since it uses as much as digits as its factorization.

129514240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101204 (or 101190 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 129514240 is about 11380.4323292219. The cubic root of 129514240 is about 505.9479498815.

The spelling of 129514240 in words is "one hundred twenty-nine million, five hundred fourteen thousand, two hundred forty".