129718133 has 4 divisors (see below), whose sum is σ = 130930560. Its totient is φ = 128505708.

The previous prime is 129718129. The next prime is 129718159. The reversal of 129718133 is 331817921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129718133 - 2² = 129718129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129718093 and 129718102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129718103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606053 + ... + 606266.

It is an arithmetic number, because the mean of its divisors is an integer number (32732640).

Almost surely, 2^129718133 is an apocalyptic number.

It is an amenable number.

129718133 is a deficient number, since it is larger than the sum of its proper divisors (1212427).

129718133 is a wasteful number, since it uses less digits than its factorization.

129718133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212426.

The product of its digits is 9072, while the sum is 35.

The square root of 129718133 is about 11389.3868579481. The cubic root of 129718133 is about 506.2133136449.

The spelling of 129718133 in words is "one hundred twenty-nine million, seven hundred eighteen thousand, one hundred thirty-three".