129803712 has 28 divisors (see below), whose sum is σ = 343439496. Its totient is φ = 43267840.

The previous prime is 129803711. The next prime is 129803719. The reversal of 129803712 is 217308921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129803711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337839 + ... + 338222.

Almost surely, 2^129803712 is an apocalyptic number.

129803712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129803712 is an abundant number, since it is smaller than the sum of its proper divisors (213635784).

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

129803712 is an equidigital number, since it uses as much as digits as its factorization.

129803712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676076 (or 676066 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 129803712 is about 11393.1432010662. The cubic root of 129803712 is about 506.3246106160.

The spelling of 129803712 in words is "one hundred twenty-nine million, eight hundred three thousand, seven hundred twelve".