129040244 has 12 divisors (see below), whose sum is σ = 226016868. Its totient is φ = 64464000.

The previous prime is 129040231. The next prime is 129040253. The reversal of 129040244 is 442040921.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 127690000 = 1162^2 + 11300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8627 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (18834739).

Almost surely, 2^129040244 is an apocalyptic number.

It is an amenable number.

129040244 is a deficient number, since it is larger than the sum of its proper divisors (96976624).

129040244 is a wasteful number, since it uses less digits than its factorization.

129040244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28066 (or 28064 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 129040244 is about 11359.5881967614. The cubic root of 129040244 is about 505.3299728885.

The spelling of 129040244 in words is "one hundred twenty-nine million, forty thousand, two hundred forty-four".