129068536 has 32 divisors (see below), whose sum is σ = 246343680. Its totient is φ = 63388000.

The previous prime is 129068519. The next prime is 129068549. The reversal of 129068536 is 635860921.

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 in 7 ways as a sum of consecutive naturals, for example, 111561 + ... + 112711.

It is an arithmetic number, because the mean of its divisors is an integer number (7698240).

Almost surely, 2^129068536 is an apocalyptic number.

It is an amenable number.

129068536 is a deficient number, since it is larger than the sum of its proper divisors (117275144).

129068536 is a wasteful number, since it uses less digits than its factorization.

129068536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 129068536 is about 11360.8334201325. The cubic root of 129068536 is about 505.3669012927.

The spelling of 129068536 in words is "one hundred twenty-nine million, sixty-eight thousand, five hundred thirty-six".