129365748 has 30 divisors (see below), whose sum is σ = 338188466. Its totient is φ = 43121808.

The previous prime is 129365741. The next prime is 129365779. The reversal of 129365748 is 847563921.

It can be written as a sum of positive squares in only one way, i.e., 118984464 + 10381284 = 10908^2 + 3222^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129365741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 199315 + ... + 199962.

Almost surely, 2^129365748 is an apocalyptic number.

129365748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129365748 is an abundant number, since it is smaller than the sum of its proper divisors (208822718).

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

129365748 is a wasteful number, since it uses less digits than its factorization.

129365748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399293 (or 399282 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 129365748 is about 11373.9064529299. The cubic root of 129365748 is about 505.7545143851.

The spelling of 129365748 in words is "one hundred twenty-nine million, three hundred sixty-five thousand, seven hundred forty-eight".