129472567 has 4 divisors (see below), whose sum is σ = 147968656. Its totient is φ = 110976480.

The previous prime is 129472477. The next prime is 129472571. The reversal of 129472567 is 765274921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765274921 = 853 ⋅897157.

It is a cyclic number.

It is not a de Polignac number, because 129472567 - 2¹⁹ = 128948279 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129472667) 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, 9248034 + ... + 9248047.

It is an arithmetic number, because the mean of its divisors is an integer number (36992164).

Almost surely, 2^129472567 is an apocalyptic number.

129472567 is a deficient number, since it is larger than the sum of its proper divisors (18496089).

129472567 is an equidigital number, since it uses as much as digits as its factorization.

129472567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18496088.

The product of its digits is 211680, while the sum is 43.

The square root of 129472567 is about 11378.6012760796. The cubic root of 129472567 is about 505.8936788074.

It can be divided in two parts, 129472 and 567, that multiplied together give a square (73410624 = 8568²).

The spelling of 129472567 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, five hundred sixty-seven".