129641157 has 12 divisors (see below), whose sum is σ = 187861804. Its totient is φ = 86149440.

The previous prime is 129641153. The next prime is 129641159. The reversal of 129641157 is 751146921.

129641157 is a `hidden beast` number, since 1 + 2 + 9 + 641 + 1 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60933636 + 68707521 = 7806^2 + 8289^2 .

It is not a de Polignac number, because 129641157 - 2² = 129641153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129641153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20194 + ... + 25827.

Almost surely, 2^129641157 is an apocalyptic number.

It is an amenable number.

129641157 is a deficient number, since it is larger than the sum of its proper divisors (58220647).

129641157 is a wasteful number, since it uses less digits than its factorization.

129641157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46340 (or 46337 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 129641157 is about 11386.0070700839. The cubic root of 129641157 is about 506.1131631999.

The spelling of 129641157 in words is "one hundred twenty-nine million, six hundred forty-one thousand, one hundred fifty-seven".