129613 has 4 divisors (see below), whose sum is σ = 141408. Its totient is φ = 117820.

The previous prime is 129607. The next prime is 129629. The reversal of 129613 is 316921.

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 129613 - 2⁵ = 129581 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5881 + ... + 5902.

It is an arithmetic number, because the mean of its divisors is an integer number (35352).

2¹²⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

129613 is a deficient number, since it is larger than the sum of its proper divisors (11795).

129613 is a wasteful number, since it uses less digits than its factorization.

129613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11794.

The product of its digits is 324, while the sum is 22.

The square root of 129613 is about 360.0180551028. The cubic root of 129613 is about 50.6076519332.

It can be divided in two parts, 12961 and 3, that multiplied together give a palindrome (38883).

The spelling of 129613 in words is "one hundred twenty-nine thousand, six hundred thirteen".