129241559 has 4 divisors (see below), whose sum is σ = 130034616. Its totient is φ = 128448504.

The previous prime is 129241549. The next prime is 129241589. The reversal of 129241559 is 955142921.

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

It is a cyclic number.

It is not a de Polignac number, because 129241559 - 2⁴ = 129241543 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 (129241529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396284 + ... + 396609.

It is an arithmetic number, because the mean of its divisors is an integer number (32508654).

Almost surely, 2^129241559 is an apocalyptic number.

129241559 is a deficient number, since it is larger than the sum of its proper divisors (793057).

129241559 is an equidigital number, since it uses as much as digits as its factorization.

129241559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793056.

The product of its digits is 32400, while the sum is 38.

The square root of 129241559 is about 11368.4457600852. The cubic root of 129241559 is about 505.5926238855.

The spelling of 129241559 in words is "one hundred twenty-nine million, two hundred forty-one thousand, five hundred fifty-nine".