129757211 has 6 divisors (see below), whose sum is σ = 130455612. Its totient is φ = 129060500.

The previous prime is 129757189. The next prime is 129757219. The reversal of 129757211 is 112757921.

It is not a de Polignac number, because 129757211 - 2¹⁴ = 129740827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129757219) 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 5 ways as a sum of consecutive naturals, for example, 180110 + ... + 180828.

It is an arithmetic number, because the mean of its divisors is an integer number (21742602).

Almost surely, 2^129757211 is an apocalyptic number.

129757211 is a deficient number, since it is larger than the sum of its proper divisors (698401).

129757211 is an frugal number, since it uses more digits than its factorization.

129757211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 970 counting only the distinct ones).

The product of its digits is 8820, while the sum is 35.

The square root of 129757211 is about 11391.1022732657. The cubic root of 129757211 is about 506.2641413313.

The spelling of 129757211 in words is "one hundred twenty-nine million, seven hundred fifty-seven thousand, two hundred eleven".