1298159 has 4 divisors (see below), whose sum is σ = 1316016. Its totient is φ = 1280304.

The previous prime is 1298149. The next prime is 1298161. The reversal of 1298159 is 9518921.

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 1298159 - 2²⁰ = 249583 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298119) 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, 8819 + ... + 8964.

It is an arithmetic number, because the mean of its divisors is an integer number (329004).

2^1298159 is an apocalyptic number.

1298159 is a deficient number, since it is larger than the sum of its proper divisors (17857).

1298159 is an equidigital number, since it uses as much as digits as its factorization.

1298159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856.

The product of its digits is 6480, while the sum is 35.

The square root of 1298159 is about 1139.3678071633. The cubic root of 1298159 is about 109.0877446262.

The spelling of 1298159 in words is "one million, two hundred ninety-eight thousand, one hundred fifty-nine".