130268729 has 4 divisors (see below), whose sum is σ = 130357476. Its totient is φ = 130179984.

The previous prime is 130268707. The next prime is 130268791. The reversal of 130268729 is 927862031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927862031 = 79 ⋅11745089.

It can be written as a sum of positive squares in 2 ways, for example, as 68095504 + 62173225 = 8252^2 + 7885^2 .

It is a cyclic number.

It is not a de Polignac number, because 130268729 - 2²⁴ = 113491513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130268692 and 130268701.

It is not an unprimeable number, because it can be changed into a prime (130268129) 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 3 ways as a sum of consecutive naturals, for example, 42134 + ... + 45119.

It is an arithmetic number, because the mean of its divisors is an integer number (32589369).

Almost surely, 2^130268729 is an apocalyptic number.

It is an amenable number.

130268729 is a deficient number, since it is larger than the sum of its proper divisors (88747).

130268729 is an equidigital number, since it uses as much as digits as its factorization.

130268729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88746.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 130268729 is about 11413.5327134065. The cubic root of 130268729 is about 506.9285197620.

The spelling of 130268729 in words is "one hundred thirty million, two hundred sixty-eight thousand, seven hundred twenty-nine".