1284004 has 12 divisors (see below), whose sum is σ = 2324700. Its totient is φ = 619808.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1284004 is 4004821.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 921600 = 602^2 + 960^2 .

It is a pancake number, because a pancake can be divided into 1284004 parts by 1602 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1284007) 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, 5419 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (193725).

2^1284004 is an apocalyptic number.

It is an amenable number.

1284004 is a deficient number, since it is larger than the sum of its proper divisors (1040696).

1284004 is a wasteful number, since it uses less digits than its factorization.

1284004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102 (or 11100 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1284004 is about 1133.1390029471. The cubic root of 1284004 is about 108.6898006543.

Adding to 1284004 its reverse (4004821), we get a palindrome (5288825).

The spelling of 1284004 in words is "one million, two hundred eighty-four thousand, four".