1284013 has 4 divisors (see below), whose sum is σ = 1296828. Its totient is φ = 1271200.

The previous prime is 1284007. The next prime is 1284037. The reversal of 1284013 is 3104821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3104821 = 1663 ⋅1867.

It can be written as a sum of positive squares in 2 ways, for example, as 1225449 + 58564 = 1107^2 + 242^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284013 - 2⁵ = 1283981 is a prime.

It is a Duffinian number.

1284013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284043) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6256 + ... + 6457.

It is an arithmetic number, because the mean of its divisors is an integer number (324207).

2^1284013 is an apocalyptic number.

It is an amenable number.

1284013 is a deficient number, since it is larger than the sum of its proper divisors (12815).

1284013 is a wasteful number, since it uses less digits than its factorization.

1284013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1284013 is about 1133.1429742093. The cubic root of 1284013 is about 108.6900546010.

Subtracting from 1284013 its product of nonzero digits (192), we obtain a palindrome (1283821).

Adding to 1284013 its reverse (3104821), we get a palindrome (4388834).

The spelling of 1284013 in words is "one million, two hundred eighty-four thousand, thirteen".