129049266 has 16 divisors (see below), whose sum is σ = 265074624. Its totient is φ = 41853744.

The previous prime is 129049241. The next prime is 129049267. The reversal of 129049266 is 662940921.

It is not an unprimeable number, because it can be changed into a prime (129049267) by changing a digit.

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, 290430 + ... + 290873.

It is an arithmetic number, because the mean of its divisors is an integer number (16567164).

Almost surely, 2^129049266 is an apocalyptic number.

129049266 is an abundant number, since it is smaller than the sum of its proper divisors (136025358).

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

129049266 is a wasteful number, since it uses less digits than its factorization.

129049266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581345.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 129049266 is about 11359.9852992863. The cubic root of 129049266 is about 505.3417495266.

The spelling of 129049266 in words is "one hundred twenty-nine million, forty-nine thousand, two hundred sixty-six".