1224403 has 2 divisors, whose sum is σ = 1224404. Its totient is φ = 1224402.

The previous prime is 1224389. The next prime is 1224413. The reversal of 1224403 is 3044221.

It is a strong prime.

It is an emirp because it is prime and its reverse (3044221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224403 - 2¹⁷ = 1093331 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1224413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612201 + 612202.

It is an arithmetic number, because the mean of its divisors is an integer number (612202).

2^1224403 is an apocalyptic number.

1224403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224403 is an equidigital number, since it uses as much as digits as its factorization.

1224403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1224403 is about 1106.5274510829. The cubic root of 1224403 is about 106.9813633946.

Adding to 1224403 its reverse (3044221), we get a palindrome (4268624).

It can be divided in two parts, 122 and 4403, that multiplied together give a triangular number (537166 = T₁₀₃₆).

The spelling of 1224403 in words is "one million, two hundred twenty-four thousand, four hundred three".