1144247 has 4 divisors (see below), whose sum is σ = 1232280. Its totient is φ = 1056216.

The previous prime is 1144243. The next prime is 1144249. The reversal of 1144247 is 7424411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7424411 = 491 ⋅15121.

It is a cyclic number.

It is not a de Polignac number, because 1144247 - 2² = 1144243 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 (1144243) 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, 43997 + ... + 44022.

It is an arithmetic number, because the mean of its divisors is an integer number (308070).

2^1144247 is an apocalyptic number.

1144247 is a deficient number, since it is larger than the sum of its proper divisors (88033).

1144247 is an equidigital number, since it uses as much as digits as its factorization.

1144247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88032.

The product of its digits is 896, while the sum is 23.

The square root of 1144247 is about 1069.6948162911. The cubic root of 1144247 is about 104.5939571472.

Adding to 1144247 its reverse (7424411), we get a palindrome (8568658).

The spelling of 1144247 in words is "one million, one hundred forty-four thousand, two hundred forty-seven".