129327126 has 32 divisors (see below), whose sum is σ = 274544640. Its totient is φ = 40473216.

The previous prime is 129327119. The next prime is 129327131. The reversal of 129327126 is 621723921.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 47535 + ... + 50181.

It is an arithmetic number, because the mean of its divisors is an integer number (8579520).

Almost surely, 2^129327126 is an apocalyptic number.

129327126 is an abundant number, since it is smaller than the sum of its proper divisors (145217514).

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

129327126 is a wasteful number, since it uses less digits than its factorization.

129327126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its digits is 9072, while the sum is 33.

The square root of 129327126 is about 11372.2084926368. The cubic root of 129327126 is about 505.7041785598.

The spelling of 129327126 in words is "one hundred twenty-nine million, three hundred twenty-seven thousand, one hundred twenty-six".