1284249 has 4 divisors (see below), whose sum is σ = 1712336. Its totient is φ = 856164.

The previous prime is 1284223. The next prime is 1284263. The reversal of 1284249 is 9424821.

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 not a de Polignac number, because 1284249 - 2¹¹ = 1282201 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1284209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214039 + ... + 214044.

It is an arithmetic number, because the mean of its divisors is an integer number (428084).

2^1284249 is an apocalyptic number.

It is an amenable number.

1284249 is a deficient number, since it is larger than the sum of its proper divisors (428087).

1284249 is an equidigital number, since it uses as much as digits as its factorization.

1284249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428086.

The product of its digits is 4608, while the sum is 30.

The square root of 1284249 is about 1133.2471045628. The cubic root of 1284249 is about 108.6967132256.

The spelling of 1284249 in words is "one million, two hundred eighty-four thousand, two hundred forty-nine".