129168055 has 8 divisors (see below), whose sum is σ = 155066112. Its totient is φ = 103291488.

The previous prime is 129168043. The next prime is 129168071. The reversal of 129168055 is 550861921.

129168055 is nontrivially palindromic in base 16.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129168055 - 2¹¹ = 129166007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14634 + ... + 21736.

It is an arithmetic number, because the mean of its divisors is an integer number (19383264).

Almost surely, 2^129168055 is an apocalyptic number.

129168055 is a deficient number, since it is larger than the sum of its proper divisors (25898057).

129168055 is an equidigital number, since it uses as much as digits as its factorization.

129168055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10745.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 129168055 is about 11365.2124925142. The cubic root of 129168055 is about 505.4967565602.

The spelling of 129168055 in words is "one hundred twenty-nine million, one hundred sixty-eight thousand, fifty-five".