129072107 has 8 divisors (see below), whose sum is σ = 131090400. Its totient is φ = 127059520.

The previous prime is 129072091. The next prime is 129072121. The reversal of 129072107 is 701270921.

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 129072107 - 2⁴ = 129072091 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129072107.

It is not an unprimeable number, because it can be changed into a prime (129072137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73613 + ... + 75345.

It is an arithmetic number, because the mean of its divisors is an integer number (16386300).

Almost surely, 2^129072107 is an apocalyptic number.

129072107 is a deficient number, since it is larger than the sum of its proper divisors (2018293).

129072107 is a wasteful number, since it uses less digits than its factorization.

129072107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 129072107 is about 11360.9905818111. The cubic root of 129072107 is about 505.3715619911.

The spelling of 129072107 in words is "one hundred twenty-nine million, seventy-two thousand, one hundred seven".