129102955 has 8 divisors (see below), whose sum is σ = 156664800. Its totient is φ = 102121536.

The previous prime is 129102923. The next prime is 129102959. The reversal of 129102955 is 559201921.

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 129102955 - 2⁵ = 129102923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129102955.

It is not an unprimeable number, because it can be changed into a prime (129102959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144615 + ... + 145504.

It is an arithmetic number, because the mean of its divisors is an integer number (19583100).

Almost surely, 2^129102955 is an apocalyptic number.

129102955 is a deficient number, since it is larger than the sum of its proper divisors (27561845).

129102955 is an equidigital number, since it uses as much as digits as its factorization.

129102955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290213.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 129102955 is about 11362.3481287980. The cubic root of 129102955 is about 505.4118197470.

The spelling of 129102955 in words is "one hundred twenty-nine million, one hundred two thousand, nine hundred fifty-five".