129260854273 has 8 divisors (see below), whose sum is σ = 134944900200. Its totient is φ = 123658593408.

The previous prime is 129260854193. The next prime is 129260854351. The reversal of 129260854273 is 372458062921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73341847489 + 55919006784 = 270817^2 + 236472^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129260854273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129260854573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20443036 + ... + 20449357.

It is an arithmetic number, because the mean of its divisors is an integer number (16868112525).

It is a 1-persistent number, because it is pandigital, but 2⋅129260854273 = 258521708546 is not.

Almost surely, 2^129260854273 is an apocalyptic number.

It is an amenable number.

129260854273 is a deficient number, since it is larger than the sum of its proper divisors (5684045927).

129260854273 is a wasteful number, since it uses less digits than its factorization.

129260854273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40892531.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 129260854273 in words is "one hundred twenty-nine billion, two hundred sixty million, eight hundred fifty-four thousand, two hundred seventy-three".