129068251 has 8 divisors (see below), whose sum is σ = 141954624. Its totient is φ = 116604480.

The previous prime is 129068243. The next prime is 129068263. The reversal of 129068251 is 152860921.

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 129068251 - 2³ = 129068243 is a prime.

It is a super-2 number, since 2×129068251² = 33317226832398002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129068201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105010 + ... + 106231.

It is an arithmetic number, because the mean of its divisors is an integer number (17744328).

Almost surely, 2^129068251 is an apocalyptic number.

129068251 is a deficient number, since it is larger than the sum of its proper divisors (12886373).

129068251 is a wasteful number, since it uses less digits than its factorization.

129068251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211301.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 129068251 is about 11360.8208770317. The cubic root of 129068251 is about 505.3665293206.

The spelling of 129068251 in words is "one hundred twenty-nine million, sixty-eight thousand, two hundred fifty-one".