129196029 has 16 divisors (see below), whose sum is σ = 182292480. Its totient is φ = 81163440.

The previous prime is 129196021. The next prime is 129196031. The reversal of 129196029 is 920691921.

It is not a de Polignac number, because 129196029 - 2³ = 129196021 is a prime.

It is a super-2 number, since 2×129196029² = 33383227818737682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129196021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4954 + ... + 16820.

It is an arithmetic number, because the mean of its divisors is an integer number (11393280).

Almost surely, 2^129196029 is an apocalyptic number.

129196029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129196029 is a deficient number, since it is larger than the sum of its proper divisors (53096451).

129196029 is a wasteful number, since it uses less digits than its factorization.

129196029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12080.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 129196029 is about 11366.4431111936. The cubic root of 129196029 is about 505.5332458340.

The spelling of 129196029 in words is "one hundred twenty-nine million, one hundred ninety-six thousand, twenty-nine".