129724882 has 8 divisors (see below), whose sum is σ = 222385536. Its totient is φ = 55596372.

The previous prime is 129724843. The next prime is 129724883. The reversal of 129724882 is 288427921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (129724883) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4633018 + ... + 4633045.

It is an arithmetic number, because the mean of its divisors is an integer number (27798192).

Almost surely, 2^129724882 is an apocalyptic number.

129724882 is a deficient number, since it is larger than the sum of its proper divisors (92660654).

129724882 is an equidigital number, since it uses as much as digits as its factorization.

129724882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9266072.

The product of its digits is 129024, while the sum is 43.

The square root of 129724882 is about 11389.6831387006. The cubic root of 129724882 is about 506.2220926139. Note that the first 3 decimals are identical.

The spelling of 129724882 in words is "one hundred twenty-nine million, seven hundred twenty-four thousand, eight hundred eighty-two".