129172148 has 24 divisors (see below), whose sum is σ = 267254400. Its totient is φ = 53450208.

The previous prime is 129172097. The next prime is 129172159. The reversal of 129172148 is 841271921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78728 + ... + 80351.

It is an arithmetic number, because the mean of its divisors is an integer number (11135600).

Almost surely, 2^129172148 is an apocalyptic number.

It is an amenable number.

129172148 is an abundant number, since it is smaller than the sum of its proper divisors (138082252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129172148 is a wasteful number, since it uses less digits than its factorization.

129172148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159119 (or 159117 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 129172148 is about 11365.3925581125. The cubic root of 129172148 is about 505.5020957967.

The spelling of 129172148 in words is "one hundred twenty-nine million, one hundred seventy-two thousand, one hundred forty-eight".