1345243 has 2 divisors, whose sum is σ = 1345244. Its totient is φ = 1345242.

The previous prime is 1345241. The next prime is 1345271. The reversal of 1345243 is 3425431.

It is a weak prime.

It is an emirp because it is prime and its reverse (3425431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345243 - 2¹ = 1345241 is a prime.

Together with 1345241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1345241) 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, 672621 + 672622.

It is an arithmetic number, because the mean of its divisors is an integer number (672622).

2^1345243 is an apocalyptic number.

1345243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345243 is an equidigital number, since it uses as much as digits as its factorization.

1345243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 22.

The square root of 1345243 is about 1159.8461104819. The cubic root of 1345243 is about 110.3909778299.

The spelling of 1345243 in words is "one million, three hundred forty-five thousand, two hundred forty-three".