129641275 has 24 divisors (see below), whose sum is σ = 172846080. Its totient is φ = 96147360.

The previous prime is 129641261. The next prime is 129641279. The reversal of 129641275 is 572146921.

It is not a de Polignac number, because 129641275 - 2¹¹ = 129639227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129641279) 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 23 ways as a sum of consecutive naturals, for example, 19422 + ... + 25228.

It is an arithmetic number, because the mean of its divisors is an integer number (7201920).

Almost surely, 2^129641275 is an apocalyptic number.

129641275 is a deficient number, since it is larger than the sum of its proper divisors (43204805).

129641275 is a wasteful number, since it uses less digits than its factorization.

129641275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883 (or 5878 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 129641275 is about 11386.0122518817. The cubic root of 129641275 is about 506.1133167554.

The spelling of 129641275 in words is "one hundred twenty-nine million, six hundred forty-one thousand, two hundred seventy-five".