1224005 has 8 divisors (see below), whose sum is σ = 1476600. Its totient is φ = 974016.

The previous prime is 1223993. The next prime is 1224029. The reversal of 1224005 is 5004221.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 872356 = 593^2 + 934^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1224005 - 2⁶ = 1223941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (184575).

2^1224005 is an apocalyptic number.

It is an amenable number.

1224005 is a deficient number, since it is larger than the sum of its proper divisors (252595).

1224005 is a wasteful number, since it uses less digits than its factorization.

1224005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1224005 is about 1106.3475945651. The cubic root of 1224005 is about 106.9697704804.

Adding to 1224005 its reverse (5004221), we get a palindrome (6228226).

The spelling of 1224005 in words is "one million, two hundred twenty-four thousand, five".