1284253 has 4 divisors (see below), whose sum is σ = 1306080. Its totient is φ = 1262428.

The previous prime is 1284223. The next prime is 1284263. The reversal of 1284253 is 3524821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10825 + ... + 10942.

It is an arithmetic number, because the mean of its divisors is an integer number (326520).

2^1284253 is an apocalyptic number.

It is an amenable number.

1284253 is a deficient number, since it is larger than the sum of its proper divisors (21827).

1284253 is an equidigital number, since it uses as much as digits as its factorization.

1284253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826.

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

The square root of 1284253 is about 1133.2488694016. The cubic root of 1284253 is about 108.6968260766.

The spelling of 1284253 in words is "one million, two hundred eighty-four thousand, two hundred fifty-three".