1224085 has 8 divisors (see below), whose sum is σ = 1555416. Its totient is φ = 921600.

The previous prime is 1224079. The next prime is 1224089. The reversal of 1224085 is 5804221.

It can be written as a sum of positive squares in 4 ways, for example, as 695556 + 528529 = 834^2 + 727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224085 - 2³ = 1224077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224089) 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 7 ways as a sum of consecutive naturals, for example, 7116 + ... + 7285.

It is an arithmetic number, because the mean of its divisors is an integer number (194427).

2^1224085 is an apocalyptic number.

It is an amenable number.

1224085 is a deficient number, since it is larger than the sum of its proper divisors (331331).

1224085 is a wasteful number, since it uses less digits than its factorization.

1224085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1224085 is about 1106.3837489768. The cubic root of 1224085 is about 106.9721009162.

It can be divided in two parts, 12240 and 85, that multiplied together give a square (1040400 = 1020²).

The spelling of 1224085 in words is "one million, two hundred twenty-four thousand, eighty-five".