1244641 has 4 divisors (see below), whose sum is σ = 1250352. Its totient is φ = 1238932.

The previous prime is 1244629. The next prime is 1244647. The reversal of 1244641 is 1464421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1464421 = 7 ⋅209203.

It is a cyclic number.

It is not a de Polignac number, because 1244641 - 2⁵ = 1244609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515 + ... + 2968.

It is an arithmetic number, because the mean of its divisors is an integer number (312588).

2^1244641 is an apocalyptic number.

It is an amenable number.

1244641 is a deficient number, since it is larger than the sum of its proper divisors (5711).

1244641 is an equidigital number, since it uses as much as digits as its factorization.

1244641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710.

The product of its digits is 768, while the sum is 22.

The square root of 1244641 is about 1115.6347968758. The cubic root of 1244641 is about 107.5675724433.

The spelling of 1244641 in words is "one million, two hundred forty-four thousand, six hundred forty-one".