1245943 has 2 divisors, whose sum is σ = 1245944. Its totient is φ = 1245942.

The previous prime is 1245929. The next prime is 1245953. The reversal of 1245943 is 3495421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245953) 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 as a sum of consecutive naturals, namely, 622971 + 622972.

It is an arithmetic number, because the mean of its divisors is an integer number (622972).

2^1245943 is an apocalyptic number.

1245943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245943 is an equidigital number, since it uses as much as digits as its factorization.

1245943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 1245943 is about 1116.2181686391. The cubic root of 1245943 is about 107.6050676386.

The spelling of 1245943 in words is "one million, two hundred forty-five thousand, nine hundred forty-three".