129312048 has 20 divisors (see below), whose sum is σ = 334056248. Its totient is φ = 43104000.

The previous prime is 129312037. The next prime is 129312059. The reversal of 129312048 is 840213921.

It is an interprime number because it is at equal distance from previous prime (129312037) and next prime (129312059).

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 3 ways as a sum of consecutive naturals, for example, 1346953 + ... + 1347048.

Almost surely, 2^129312048 is an apocalyptic number.

It is an amenable number.

129312048 is an abundant number, since it is smaller than the sum of its proper divisors (204744200).

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

129312048 is a wasteful number, since it uses less digits than its factorization.

129312048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694012 (or 2694006 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 129312048 is about 11371.5455413941. The cubic root of 129312048 is about 505.6845247713.

Adding to 129312048 its reverse (840213921), we get a palindrome (969525969).

The spelling of 129312048 in words is "one hundred twenty-nine million, three hundred twelve thousand, forty-eight".