129310834 has 16 divisors (see below), whose sum is σ = 197665920. Its totient is φ = 63432720.

The previous prime is 129310829. The next prime is 129310837. The reversal of 129310834 is 438013921.

It is a junction number, because it is equal to n+sod(n) for n = 129310796 and 129310805.

It is not an unprimeable number, because it can be changed into a prime (129310837) 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, 23244 + ... + 28264.

It is an arithmetic number, because the mean of its divisors is an integer number (12354120).

Almost surely, 2^129310834 is an apocalyptic number.

129310834 is a deficient number, since it is larger than the sum of its proper divisors (68355086).

129310834 is a wasteful number, since it uses less digits than its factorization.

129310834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 129310834 is about 11371.4921624209. The cubic root of 129310834 is about 505.6829422868.

The spelling of 129310834 in words is "one hundred twenty-nine million, three hundred ten thousand, eight hundred thirty-four".