129191002 has 16 divisors (see below), whose sum is σ = 199120320. Its totient is φ = 62840448.

The previous prime is 129190993. The next prime is 129191003. The reversal of 129191002 is 200191921.

It is not an unprimeable number, because it can be changed into a prime (129191003) 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, 5803 + ... + 17089.

It is an arithmetic number, because the mean of its divisors is an integer number (12445020).

Almost surely, 2^129191002 is an apocalyptic number.

129191002 is a deficient number, since it is larger than the sum of its proper divisors (69929318).

129191002 is a wasteful number, since it uses less digits than its factorization.

129191002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11445.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 129191002 is about 11366.2219756610. The cubic root of 129191002 is about 505.5266890055.

The spelling of 129191002 in words is "one hundred twenty-nine million, one hundred ninety-one thousand, two".