129587 has 2 divisors, whose sum is σ = 129588. Its totient is φ = 129586.

The previous prime is 129581. The next prime is 129589. The reversal of 129587 is 785921.

It is a strong prime.

It is an emirp because it is prime and its reverse (785921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129587 - 2¹⁰ = 128563 is a prime.

Together with 129589, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (129581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64793 + 64794.

It is an arithmetic number, because the mean of its divisors is an integer number (64794).

2¹²⁹⁵⁸⁷ is an apocalyptic number.

129587 is a deficient number, since it is larger than the sum of its proper divisors (1).

129587 is an equidigital number, since it uses as much as digits as its factorization.

129587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 129587 is about 359.9819439916. The cubic root of 129587 is about 50.6042677898.

The spelling of 129587 in words is "one hundred twenty-nine thousand, five hundred eighty-seven".