129011834 has 16 divisors (see below), whose sum is σ = 221451648. Its totient is φ = 55218672.

The previous prime is 129011821. The next prime is 129011891. The reversal of 129011834 is 438110921.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129011797 and 129011806.

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 7 ways as a sum of consecutive naturals, for example, 5924 + ... + 17120.

It is an arithmetic number, because the mean of its divisors is an integer number (13840728).

Almost surely, 2^129011834 is an apocalyptic number.

129011834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129011834 is a deficient number, since it is larger than the sum of its proper divisors (92439814).

129011834 is a wasteful number, since it uses less digits than its factorization.

129011834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12029.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 129011834 is about 11358.3376424546. The cubic root of 129011834 is about 505.2928850318.

The spelling of 129011834 in words is "one hundred twenty-nine million, eleven thousand, eight hundred thirty-four".