129610001 has 16 divisors (see below), whose sum is σ = 140794560. Its totient is φ = 118895040.

The previous prime is 129609929. The next prime is 129610021. The reversal of 129610001 is 100016921.

It is a cyclic number.

It is not a de Polignac number, because 129610001 - 2¹⁰ = 129608977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129610021) 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, 232415 + ... + 232971.

It is an arithmetic number, because the mean of its divisors is an integer number (8799660).

Almost surely, 2^129610001 is an apocalyptic number.

It is an amenable number.

129610001 is a deficient number, since it is larger than the sum of its proper divisors (11184559).

129610001 is a wasteful number, since it uses less digits than its factorization.

129610001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 129610001 is about 11384.6388172836. The cubic root of 129610001 is about 506.0726160840.

Adding to 129610001 its reverse (100016921), we get a palindrome (229626922).

The spelling of 129610001 in words is "one hundred twenty-nine million, six hundred ten thousand, one".