129497 has 2 divisors, whose sum is σ = 129498. Its totient is φ = 129496.

The previous prime is 129491. The next prime is 129499. The reversal of 129497 is 794921.

129497 is nontrivially palindromic in base 15.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80656 + 48841 = 284^2 + 221^2 .

It is an emirp because it is prime and its reverse (794921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129497 - 2¹⁰ = 128473 is a prime.

Together with 129499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64748 + 64749.

It is an arithmetic number, because the mean of its divisors is an integer number (64749).

2¹²⁹⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

129497 is a deficient number, since it is larger than the sum of its proper divisors (1).

129497 is an equidigital number, since it uses as much as digits as its factorization.

129497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 129497 is about 359.8569160097. The cubic root of 129497 is about 50.5925499507.

It can be divided in two parts, 129 and 497, that added together give a palindrome (626).

The spelling of 129497 in words is "one hundred twenty-nine thousand, four hundred ninety-seven".