129383061 has 8 divisors (see below), whose sum is σ = 172685760. Its totient is φ = 86167872.

The previous prime is 129383053. The next prime is 129383071. The reversal of 129383061 is 160383921.

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

It is not a de Polignac number, because 129383061 - 2³ = 129383053 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129383021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18345 + ... + 24398.

It is an arithmetic number, because the mean of its divisors is an integer number (21585720).

Almost surely, 2^129383061 is an apocalyptic number.

It is an amenable number.

129383061 is a deficient number, since it is larger than the sum of its proper divisors (43302699).

129383061 is a wasteful number, since it uses less digits than its factorization.

129383061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43755.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 129383061 is about 11374.6675116242. The cubic root of 129383061 is about 505.7770750640. Note that the first 3 decimals are identical.

The spelling of 129383061 in words is "one hundred twenty-nine million, three hundred eighty-three thousand, sixty-one".