1224013 has 4 divisors (see below), whose sum is σ = 1398880. Its totient is φ = 1049148.

The previous prime is 1223993. The next prime is 1224029. The reversal of 1224013 is 3104221.

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-1224013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223984 and 1224002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224053) 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, 87423 + ... + 87436.

It is an arithmetic number, because the mean of its divisors is an integer number (349720).

2^1224013 is an apocalyptic number.

It is an amenable number.

1224013 is a deficient number, since it is larger than the sum of its proper divisors (174867).

1224013 is an equidigital number, since it uses as much as digits as its factorization.

1224013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174866.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1224013 is about 1106.3512100594. The cubic root of 1224013 is about 106.9700035285.

Adding to 1224013 its reverse (3104221), we get a palindrome (4328234).

It can be divided in two parts, 12 and 24013, that added together give a square (24025 = 155²).

The spelling of 1224013 in words is "one million, two hundred twenty-four thousand, thirteen".