129584434 has 32 divisors (see below), whose sum is σ = 230590080. Its totient is φ = 53457408.

The previous prime is 129584419. The next prime is 129584437. The reversal of 129584434 is 434485921.

It is not an unprimeable number, because it can be changed into a prime (129584437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48957 + ... + 51535.

It is an arithmetic number, because the mean of its divisors is an integer number (7205940).

Almost surely, 2^129584434 is an apocalyptic number.

129584434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129584434 is a deficient number, since it is larger than the sum of its proper divisors (101005646).

129584434 is a wasteful number, since it uses less digits than its factorization.

129584434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722.

The product of its digits is 138240, while the sum is 40.

The square root of 129584434 is about 11383.5158892145. The cubic root of 129584434 is about 506.0393377636.

The spelling of 129584434 in words is "one hundred twenty-nine million, five hundred eighty-four thousand, four hundred thirty-four".