129516049 has 16 divisors (see below), whose sum is σ = 141809920. Its totient is φ = 117573120.

The previous prime is 129516031. The next prime is 129516073. The reversal of 129516049 is 940615921.

It is a cyclic number.

It is not a de Polignac number, because 129516049 - 2⁵ = 129516017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129515999 and 129516017.

It is not an unprimeable number, because it can be changed into a prime (129516029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341542 + ... + 341920.

It is an arithmetic number, because the mean of its divisors is an integer number (8863120).

Almost surely, 2^129516049 is an apocalyptic number.

It is an amenable number.

129516049 is a deficient number, since it is larger than the sum of its proper divisors (12293871).

129516049 is a wasteful number, since it uses less digits than its factorization.

129516049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 129516049 is about 11380.5118074716. The cubic root of 129516049 is about 505.9503054927.

The spelling of 129516049 in words is "one hundred twenty-nine million, five hundred sixteen thousand, forty-nine".