129690107 has 4 divisors (see below), whose sum is σ = 132706200. Its totient is φ = 126674016.

The previous prime is 129690049. The next prime is 129690109. The reversal of 129690107 is 701096921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129690107 - 2⁸ = 129689851 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129690109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507982 + ... + 1508067.

It is an arithmetic number, because the mean of its divisors is an integer number (33176550).

Almost surely, 2^129690107 is an apocalyptic number.

129690107 is a deficient number, since it is larger than the sum of its proper divisors (3016093).

129690107 is an equidigital number, since it uses as much as digits as its factorization.

129690107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016092.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 129690107 is about 11388.1564355255. The cubic root of 129690107 is about 506.1768547067.

The spelling of 129690107 in words is "one hundred twenty-nine million, six hundred ninety thousand, one hundred seven".