129455696 has 20 divisors (see below), whose sum is σ = 256939284. Its totient is φ = 63148800.

The previous prime is 129455693. The next prime is 129455717. The reversal of 129455696 is 696554921.

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 99600400 = 5464^2 + 9980^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129455696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129455693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98015 + ... + 99326.

Almost surely, 2^129455696 is an apocalyptic number.

129455696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129455696 is a deficient number, since it is larger than the sum of its proper divisors (127483588).

129455696 is a wasteful number, since it uses less digits than its factorization.

129455696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197390 (or 197384 counting only the distinct ones).

The product of its digits is 583200, while the sum is 47.

The square root of 129455696 is about 11377.8599042175. The cubic root of 129455696 is about 505.8717042605.

The spelling of 129455696 in words is "one hundred twenty-nine million, four hundred fifty-five thousand, six hundred ninety-six".