7945243 has 2 divisors, whose sum is σ = 7945244. Its totient is φ = 7945242.

The previous prime is 7945241. The next prime is 7945261. The reversal of 7945243 is 3425497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7945243 - 2¹ = 7945241 is a prime.

Together with 7945241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 7945199 and 7945208.

It is not a weakly prime, because it can be changed into another prime (7945241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972621 + 3972622.

It is an arithmetic number, because the mean of its divisors is an integer number (3972622).

Almost surely, 2^7945243 is an apocalyptic number.

7945243 is a deficient number, since it is larger than the sum of its proper divisors (1).

7945243 is an equidigital number, since it uses as much as digits as its factorization.

7945243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 7945243 is about 2818.7307427280. The cubic root of 7945243 is about 199.5426466032.

The spelling of 7945243 in words is "seven million, nine hundred forty-five thousand, two hundred forty-three".