1224913 has 2 divisors, whose sum is σ = 1224914. Its totient is φ = 1224912.

The previous prime is 1224893. The next prime is 1224919. The reversal of 1224913 is 3194221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016064 + 208849 = 1008^2 + 457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612456 + 612457.

It is an arithmetic number, because the mean of its divisors is an integer number (612457).

2^1224913 is an apocalyptic number.

It is an amenable number.

1224913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224913 is an equidigital number, since it uses as much as digits as its factorization.

1224913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 1224913 is about 1106.7578777673. The cubic root of 1224913 is about 106.9962149650.

The spelling of 1224913 in words is "one million, two hundred twenty-four thousand, nine hundred thirteen".