129380113 has 4 divisors (see below), whose sum is σ = 129426660. Its totient is φ = 129333568.

The previous prime is 129380093. The next prime is 129380137. The reversal of 129380113 is 311083921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311083921 = 179 ⋅1737899.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 117874449 = 3392^2 + 10857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129380113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129380213) 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, 18820 + ... + 24757.

It is an arithmetic number, because the mean of its divisors is an integer number (32356665).

Almost surely, 2^129380113 is an apocalyptic number.

It is an amenable number.

129380113 is a deficient number, since it is larger than the sum of its proper divisors (46547).

129380113 is an equidigital number, since it uses as much as digits as its factorization.

129380113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46546.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 129380113 is about 11374.5379246807. The cubic root of 129380113 is about 505.7732336489.

It can be divided in two parts, 1293 and 80113, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 129380113 in words is "one hundred twenty-nine million, three hundred eighty thousand, one hundred thirteen".