1228243 has 2 divisors, whose sum is σ = 1228244. Its totient is φ = 1228242.

The previous prime is 1228219. The next prime is 1228247. The reversal of 1228243 is 3428221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228247) 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 as a sum of consecutive naturals, namely, 614121 + 614122.

It is an arithmetic number, because the mean of its divisors is an integer number (614122).

2^1228243 is an apocalyptic number.

1228243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228243 is an equidigital number, since it uses as much as digits as its factorization.

1228243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1228243 is about 1108.2612507888. The cubic root of 1228243 is about 107.0930857932.

Subtracting from 1228243 its sum of digits (22), we obtain a palindrome (1228221).

The spelling of 1228243 in words is "one million, two hundred twenty-eight thousand, two hundred forty-three".