1290241 has 4 divisors (see below), whose sum is σ = 1293232. Its totient is φ = 1287252.

The previous prime is 1290209. The next prime is 1290257. The reversal of 1290241 is 1420921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1290241 - 2⁵ = 1290209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (323308).

It is a Proth number, since it is equal to 315 ⋅ 2¹² + 1 and 315 < 2¹².

2^1290241 is an apocalyptic number.

It is an amenable number.

1290241 is a deficient number, since it is larger than the sum of its proper divisors (2991).

1290241 is an equidigital number, since it uses as much as digits as its factorization.

1290241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1290241 is about 1135.8877585395. The cubic root of 1290241 is about 108.8655019806.

The spelling of 1290241 in words is "one million, two hundred ninety thousand, two hundred forty-one".