129613039 has 4 divisors (see below), whose sum is σ = 129640624. Its totient is φ = 129585456.

The previous prime is 129612971. The next prime is 129613061. The reversal of 129613039 is 930316921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129613039 - 2¹¹ = 129610991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129612995 and 129613013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129613339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4782 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (32410156).

Almost surely, 2^129613039 is an apocalyptic number.

129613039 is a deficient number, since it is larger than the sum of its proper divisors (27585).

129613039 is an equidigital number, since it uses as much as digits as its factorization.

129613039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27584.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 129613039 is about 11384.7722419028. The cubic root of 129613039 is about 506.0765700911.

The spelling of 129613039 in words is "one hundred twenty-nine million, six hundred thirteen thousand, thirty-nine".