1224143 has 4 divisors (see below), whose sum is σ = 1228368. Its totient is φ = 1219920.

The previous prime is 1224133. The next prime is 1224149. The reversal of 1224143 is 3414221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3414221 = 47 ⋅72643.

It is a cyclic number.

It is not a de Polignac number, because 1224143 - 2⁶ = 1224079 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 (1224149) 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, 1643 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (307092).

2^1224143 is an apocalyptic number.

1224143 is a deficient number, since it is larger than the sum of its proper divisors (4225).

1224143 is an equidigital number, since it uses as much as digits as its factorization.

1224143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224.

The product of its digits is 192, while the sum is 17.

The square root of 1224143 is about 1106.4099601865. The cubic root of 1224143 is about 106.9737904187.

Adding to 1224143 its reverse (3414221), we get a palindrome (4638364).

The spelling of 1224143 in words is "one million, two hundred twenty-four thousand, one hundred forty-three".