129292029 has 12 divisors (see below), whose sum is σ = 186923100. Its totient is φ = 86117184.

The previous prime is 129292027. The next prime is 129292043. The reversal of 129292029 is 920292921.

It can be written as a sum of positive squares in 2 ways, for example, as 127916100 + 1375929 = 11310^2 + 1173^2 .

It is not a de Polignac number, because 129292029 - 2¹ = 129292027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129291984 and 129292002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129292027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5217 + ... + 16905.

It is an arithmetic number, because the mean of its divisors is an integer number (15576925).

Almost surely, 2^129292029 is an apocalyptic number.

It is an amenable number.

129292029 is a deficient number, since it is larger than the sum of its proper divisors (57631071).

129292029 is a wasteful number, since it uses less digits than its factorization.

129292029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12924 (or 12921 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 129292029 is about 11370.6652839665. The cubic root of 129292029 is about 505.6584281543.

The spelling of 129292029 in words is "one hundred twenty-nine million, two hundred ninety-two thousand, twenty-nine".