129930297 has 16 divisors (see below), whose sum is σ = 198190080. Its totient is φ = 74170512.

The previous prime is 129930293. The next prime is 129930313. The reversal of 129930297 is 792039921.

It is a happy number.

It is not a de Polignac number, because 129930297 - 2² = 129930293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129930293) 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, 23154 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (12386880).

Almost surely, 2^129930297 is an apocalyptic number.

It is an amenable number.

129930297 is a deficient number, since it is larger than the sum of its proper divisors (68259783).

129930297 is a wasteful number, since it uses less digits than its factorization.

129930297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6292.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 129930297 is about 11398.6971623954. The cubic root of 129930297 is about 506.4891469417.

The spelling of 129930297 in words is "one hundred twenty-nine million, nine hundred thirty thousand, two hundred ninety-seven".