1284223 has 2 divisors, whose sum is σ = 1284224. Its totient is φ = 1284222.

The previous prime is 1284211. The next prime is 1284263. The reversal of 1284223 is 3224821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1284223 - 2¹³ = 1276031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1284194 and 1284203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284263) 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, 642111 + 642112.

It is an arithmetic number, because the mean of its divisors is an integer number (642112).

2^1284223 is an apocalyptic number.

1284223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284223 is an equidigital number, since it uses as much as digits as its factorization.

1284223 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 1284223 is about 1133.2356330437. The cubic root of 1284223 is about 108.6959796883.

The spelling of 1284223 in words is "one million, two hundred eighty-four thousand, two hundred twenty-three".