129855092 has 12 divisors (see below), whose sum is σ = 230972196. Its totient is φ = 63863040.

The previous prime is 129855083. The next prime is 129855109. The reversal of 129855092 is 290558921.

It can be written as a sum of positive squares in 2 ways, for example, as 68326756 + 61528336 = 8266^2 + 7844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265853 + ... + 266340.

It is an arithmetic number, because the mean of its divisors is an integer number (19247683).

Almost surely, 2^129855092 is an apocalyptic number.

It is an amenable number.

129855092 is a deficient number, since it is larger than the sum of its proper divisors (101117104).

129855092 is a wasteful number, since it uses less digits than its factorization.

129855092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532258 (or 532256 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 129855092 is about 11395.3978429891. The cubic root of 129855092 is about 506.3914076959.

The spelling of 129855092 in words is "one hundred twenty-nine million, eight hundred fifty-five thousand, ninety-two".