129300557126 has 24 divisors (see below), whose sum is σ = 211427366400. Its totient is φ = 59276639136.

The previous prime is 129300557123. The next prime is 129300557137. The reversal of 129300557126 is 621755003921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129300557123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1233350 + ... + 1334073.

It is an arithmetic number, because the mean of its divisors is an integer number (8809473600).

Almost surely, 2^129300557126 is an apocalyptic number.

129300557126 is a deficient number, since it is larger than the sum of its proper divisors (82126809274).

129300557126 is a wasteful number, since it uses less digits than its factorization.

129300557126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567600 (or 2567587 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 129300557126 in words is "one hundred twenty-nine billion, three hundred million, five hundred fifty-seven thousand, one hundred twenty-six".