129049212429 has 48 divisors (see below), whose sum is σ = 195320541312. Its totient is φ = 81949722624.

The previous prime is 129049212427. The next prime is 129049212443. The reversal of 129049212429 is 924212940921.

It is a happy number.

129049212429 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 4 + 9 + 212 + 429 = 666.

It is not a de Polignac number, because 129049212429 - 2¹ = 129049212427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129049212427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63664114 + ... + 63666140.

It is an arithmetic number, because the mean of its divisors is an integer number (4069177944).

Almost surely, 2^129049212429 is an apocalyptic number.

It is an amenable number.

129049212429 is a deficient number, since it is larger than the sum of its proper divisors (66271328883).

129049212429 is a wasteful number, since it uses less digits than its factorization.

129049212429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186 (or 3183 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 129049212429 in words is "one hundred twenty-nine billion, forty-nine million, two hundred twelve thousand, four hundred twenty-nine".