1224365 has 4 divisors (see below), whose sum is σ = 1469244. Its totient is φ = 979488.

The previous prime is 1224347. The next prime is 1224389. The reversal of 1224365 is 5634221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 866761 + 357604 = 931^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224365 - 2⁸ = 1224109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122432 + ... + 122441.

It is an arithmetic number, because the mean of its divisors is an integer number (367311).

2^1224365 is an apocalyptic number.

It is an amenable number.

1224365 is a deficient number, since it is larger than the sum of its proper divisors (244879).

1224365 is an equidigital number, since it uses as much as digits as its factorization.

1224365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244878.

The product of its digits is 1440, while the sum is 23.

The square root of 1224365 is about 1106.5102801149. The cubic root of 1224365 is about 106.9802566420.

Adding to 1224365 its reverse (5634221), we get a palindrome (6858586).

The spelling of 1224365 in words is "one million, two hundred twenty-four thousand, three hundred sixty-five".