129256014 has 16 divisors (see below), whose sum is σ = 258682752. Its totient is φ = 43056888.

The previous prime is 129256009. The next prime is 129256027. The reversal of 129256014 is 410652921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4087 + ... + 16589.

It is an arithmetic number, because the mean of its divisors is an integer number (16167672).

Almost surely, 2^129256014 is an apocalyptic number.

129256014 is an abundant number, since it is smaller than the sum of its proper divisors (129426738).

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

129256014 is a wasteful number, since it uses less digits than its factorization.

129256014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14231.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129256014 is about 11369.0814932430. The cubic root of 129256014 is about 505.6114724896.

The spelling of 129256014 in words is "one hundred twenty-nine million, two hundred fifty-six thousand, fourteen".