129529730 has 16 divisors (see below), whose sum is σ = 254349504. Its totient is φ = 47101680.

The previous prime is 129529727. The next prime is 129529759. The reversal of 129529730 is 37925921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588662 + ... + 588881.

It is an arithmetic number, because the mean of its divisors is an integer number (15896844).

Almost surely, 2^129529730 is an apocalyptic number.

129529730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129529730 is a deficient number, since it is larger than the sum of its proper divisors (124819774).

129529730 is a wasteful number, since it uses less digits than its factorization.

129529730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177561.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 129529730 is about 11381.1128629849. The cubic root of 129529730 is about 505.9681196618.

The spelling of 129529730 in words is "one hundred twenty-nine million, five hundred twenty-nine thousand, seven hundred thirty".