129772294 has 8 divisors (see below), whose sum is σ = 195734448. Its totient is φ = 64527480.

The previous prime is 129772289. The next prime is 129772327. The reversal of 129772294 is 492277921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129772294.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178882 + ... + 179605.

It is an arithmetic number, because the mean of its divisors is an integer number (24466806).

Almost surely, 2^129772294 is an apocalyptic number.

129772294 is a deficient number, since it is larger than the sum of its proper divisors (65962154).

129772294 is a wasteful number, since it uses less digits than its factorization.

129772294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358670.

The product of its digits is 127008, while the sum is 43.

The square root of 129772294 is about 11391.7643058483. The cubic root of 129772294 is about 506.2837566476.

The spelling of 129772294 in words is "one hundred twenty-nine million, seven hundred seventy-two thousand, two hundred ninety-four".