129300032 has 14 divisors (see below), whose sum is σ = 256579878. Its totient is φ = 64649984.

The previous prime is 129300029. The next prime is 129300071. The reversal of 129300032 is 230003921.

It can be written as a sum of positive squares in only one way, i.e., 127599616 + 1700416 = 11296^2 + 1304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129299977 and 129300013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010093 + ... + 1010220.

Almost surely, 2^129300032 is an apocalyptic number.

It is an amenable number.

129300032 is a deficient number, since it is larger than the sum of its proper divisors (127279846).

129300032 is an equidigital number, since it uses as much as digits as its factorization.

129300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020325 (or 2020315 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 129300032 is about 11371.0171928460. The cubic root of 129300032 is about 505.6688611278.

Adding to 129300032 its reverse (230003921), we get a palindrome (359303953).

The spelling of 129300032 in words is "one hundred twenty-nine million, three hundred thousand, thirty-two".