1284823 has 2 divisors, whose sum is σ = 1284824. Its totient is φ = 1284822.

The previous prime is 1284793. The next prime is 1284841. The reversal of 1284823 is 3284821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1284823 - 2⁵ = 1284791 is a prime.

It is the 1134-th Hogben number.

It is a junction number, because it is equal to n+sod(n) for n = 1284791 and 1284800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284863) by changing a digit.

It is a nontrivial repunit in base 1133.

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, 642411 + 642412.

It is an arithmetic number, because the mean of its divisors is an integer number (642412).

2^1284823 is an apocalyptic number.

1284823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284823 is an equidigital number, since it uses as much as digits as its factorization.

1284823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The square root of 1284823 is about 1133.5003308337. The cubic root of 1284823 is about 108.7129049507.

The spelling of 1284823 in words is "one million, two hundred eighty-four thousand, eight hundred twenty-three".