129357927 has 6 divisors (see below), whose sum is σ = 186850352. Its totient is φ = 86238612.

The previous prime is 129357901. The next prime is 129357929. The reversal of 129357927 is 729753921.

It is not a de Polignac number, because 129357927 - 2⁶ = 129357863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129357929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7186543 + ... + 7186560.

Almost surely, 2^129357927 is an apocalyptic number.

129357927 is a deficient number, since it is larger than the sum of its proper divisors (57492425).

129357927 is a wasteful number, since it uses less digits than its factorization.

129357927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373109 (or 14373106 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 129357927 is about 11373.5626344607. The cubic root of 129357927 is about 505.7443221308.

The spelling of 129357927 in words is "one hundred twenty-nine million, three hundred fifty-seven thousand, nine hundred twenty-seven".