1284523 has 2 divisors, whose sum is σ = 1284524. Its totient is φ = 1284522.

The previous prime is 1284511. The next prime is 1284541. The reversal of 1284523 is 3254821.

It is a weak prime.

It is an emirp because it is prime and its reverse (3254821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284523 is a prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1284553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642261 + 642262.

It is an arithmetic number, because the mean of its divisors is an integer number (642262).

2^1284523 is an apocalyptic number.

1284523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284523 is an equidigital number, since it uses as much as digits as its factorization.

1284523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 1284523 is about 1133.3679896662. The cubic root of 1284523 is about 108.7044429783.

The spelling of 1284523 in words is "one million, two hundred eighty-four thousand, five hundred twenty-three".