129132255 has 64 divisors (see below), whose sum is σ = 253698048. Its totient is φ = 54743040.

The previous prime is 129132239. The next prime is 129132271. The reversal of 129132255 is 552231921.

It is an interprime number because it is at equal distance from previous prime (129132239) and next prime (129132271).

It is not a de Polignac number, because 129132255 - 2⁴ = 129132239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 129810 + ... + 130800.

It is an arithmetic number, because the mean of its divisors is an integer number (3964032).

Almost surely, 2^129132255 is an apocalyptic number.

129132255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129132255 is a deficient number, since it is larger than the sum of its proper divisors (124565793).

129132255 is a wasteful number, since it uses less digits than its factorization.

129132255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its digits is 5400, while the sum is 30.

The square root of 129132255 is about 11363.6374018181. The cubic root of 129132255 is about 505.4500513692.

The spelling of 129132255 in words is "one hundred twenty-nine million, one hundred thirty-two thousand, two hundred fifty-five".