129568463 has 4 divisors (see below), whose sum is σ = 130438200. Its totient is φ = 128698728.

The previous prime is 129568457. The next prime is 129568469. The reversal of 129568463 is 364865921.

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

It is an interprime number because it is at equal distance from previous prime (129568457) and next prime (129568469).

It is a cyclic number.

It is not a de Polignac number, because 129568463 - 2⁸ = 129568207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129568469) 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, 434645 + ... + 434942.

It is an arithmetic number, because the mean of its divisors is an integer number (32609550).

Almost surely, 2^129568463 is an apocalyptic number.

129568463 is a deficient number, since it is larger than the sum of its proper divisors (869737).

129568463 is an equidigital number, since it uses as much as digits as its factorization.

129568463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869736.

The product of its digits is 311040, while the sum is 44.

The square root of 129568463 is about 11382.8143707960. The cubic root of 129568463 is about 506.0185474930.

It can be divided in two parts, 129568 and 463, that added together give a palindrome (130031).

The spelling of 129568463 in words is "one hundred twenty-nine million, five hundred sixty-eight thousand, four hundred sixty-three".