1284263 has 2 divisors, whose sum is σ = 1284264. Its totient is φ = 1284262.

The previous prime is 1284223. The next prime is 1284271. The reversal of 1284263 is 3624821.

It is a strong prime.

It is an emirp because it is prime and its reverse (3624821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1284263 - 2⁸ = 1284007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642131 + 642132.

It is an arithmetic number, because the mean of its divisors is an integer number (642132).

2^1284263 is an apocalyptic number.

1284263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284263 is an equidigital number, since it uses as much as digits as its factorization.

1284263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 1284263 is about 1133.2532814865. The cubic root of 1284263 is about 108.6971082031.

The spelling of 1284263 in words is "one million, two hundred eighty-four thousand, two hundred sixty-three".