129823334 has 4 divisors (see below), whose sum is σ = 194735004. Its totient is φ = 64911666.

The previous prime is 129823313. The next prime is 129823399. The reversal of 129823334 is 433328921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433328921 = 107 ⋅4049803.

It is a junction number, because it is equal to n+sod(n) for n = 129823294 and 129823303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32455832 + ... + 32455835.

It is an arithmetic number, because the mean of its divisors is an integer number (48683751).

Almost surely, 2^129823334 is an apocalyptic number.

129823334 is a deficient number, since it is larger than the sum of its proper divisors (64911670).

129823334 is an equidigital number, since it uses as much as digits as its factorization.

129823334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64911669.

The product of its digits is 31104, while the sum is 35.

The square root of 129823334 is about 11394.0043005082. The cubic root of 129823334 is about 506.3501224723.

The spelling of 129823334 in words is "one hundred twenty-nine million, eight hundred twenty-three thousand, three hundred thirty-four".