1241285159 has 4 divisors (see below), whose sum is σ = 1244842200. Its totient is φ = 1237728120.

The previous prime is 1241285153. The next prime is 1241285161. The reversal of 1241285159 is 9515821421.

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 1241285159 - 2²⁰ = 1240236583 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 (1241285153) 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, 1777997 + ... + 1778694.

It is an arithmetic number, because the mean of its divisors is an integer number (311210550).

Almost surely, 2^1241285159 is an apocalyptic number.

1241285159 is a deficient number, since it is larger than the sum of its proper divisors (3557041).

1241285159 is an equidigital number, since it uses as much as digits as its factorization.

1241285159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557040.

The product of its digits is 28800, while the sum is 38.

The square root of 1241285159 is about 35231.8770291905. The cubic root of 1241285159 is about 1074.7080971282.

The spelling of 1241285159 in words is "one billion, two hundred forty-one million, two hundred eighty-five thousand, one hundred fifty-nine".