129729601 has 8 divisors (see below), whose sum is σ = 137912544. Its totient is φ = 121608000.

The previous prime is 129729563. The next prime is 129729629. The reversal of 129729601 is 106927921.

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

It is a cyclic number.

It is not a de Polignac number, because 129729601 - 2¹¹ = 129727553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129729641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10935 + ... + 19468.

It is an arithmetic number, because the mean of its divisors is an integer number (17239068).

Almost surely, 2^129729601 is an apocalyptic number.

It is an amenable number.

129729601 is a deficient number, since it is larger than the sum of its proper divisors (8182943).

129729601 is a wasteful number, since it uses less digits than its factorization.

129729601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30671.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 129729601 is about 11389.8902979792. The cubic root of 129729601 is about 506.2282308172.

The spelling of 129729601 in words is "one hundred twenty-nine million, seven hundred twenty-nine thousand, six hundred one".