1224099 has 8 divisors (see below), whose sum is σ = 1813520. Its totient is φ = 816048.

The previous prime is 1224089. The next prime is 1224109. The reversal of 1224099 is 9904221.

It is an interprime number because it is at equal distance from previous prime (1224089) and next prime (1224109).

It is not a de Polignac number, because 1224099 - 2⁹ = 1223587 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45337 = 1224099 / (1 + 2 + 2 + 4 + 0 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224029) 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, 22642 + ... + 22695.

It is an arithmetic number, because the mean of its divisors is an integer number (226690).

2^1224099 is an apocalyptic number.

1224099 is a deficient number, since it is larger than the sum of its proper divisors (589421).

1224099 is an equidigital number, since it uses as much as digits as its factorization.

1224099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45346 (or 45340 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1224099 is about 1106.3900758774. The cubic root of 1224099 is about 106.9725087320.

Adding to 1224099 its product of nonzero digits (1296), we get a triangular number (1225395 = T₁₅₆₅).

The spelling of 1224099 in words is "one million, two hundred twenty-four thousand, ninety-nine".