129070155 has 16 divisors (see below), whose sum is σ = 213634080. Its totient is φ = 66463488.

The previous prime is 129070087. The next prime is 129070169. The reversal of 129070155 is 551070921.

It is not a de Polignac number, because 129070155 - 2⁷ = 129070027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147922 + ... + 148791.

It is an arithmetic number, because the mean of its divisors is an integer number (13352130).

Almost surely, 2^129070155 is an apocalyptic number.

129070155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129070155 is a deficient number, since it is larger than the sum of its proper divisors (84563925).

129070155 is a wasteful number, since it uses less digits than its factorization.

129070155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296750.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 129070155 is about 11360.9046734844. The cubic root of 129070155 is about 505.3690143447.

The spelling of 129070155 in words is "one hundred twenty-nine million, seventy thousand, one hundred fifty-five".