129317248 has 16 divisors (see below), whose sum is σ = 257624460. Its totient is φ = 64658560.

The previous prime is 129317219. The next prime is 129317261. The reversal of 129317248 is 842713921.

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 505018 + ... + 505273.

Almost surely, 2^129317248 is an apocalyptic number.

It is an amenable number.

129317248 is a deficient number, since it is larger than the sum of its proper divisors (128307212).

129317248 is an equidigital number, since it uses as much as digits as its factorization.

129317248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010305 (or 1010293 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 129317248 is about 11371.7741799598. The cubic root of 129317248 is about 505.6913030113.

The spelling of 129317248 in words is "one hundred twenty-nine million, three hundred seventeen thousand, two hundred forty-eight".