7421056243 has 2 divisors, whose sum is σ = 7421056244. Its totient is φ = 7421056242.

The previous prime is 7421056213. The next prime is 7421056261. The reversal of 7421056243 is 3426501247.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421056243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7421056199 and 7421056208.

It is not a weakly prime, because it can be changed into another prime (7421056213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710528121 + 3710528122.

It is an arithmetic number, because the mean of its divisors is an integer number (3710528122).

Almost surely, 2^7421056243 is an apocalyptic number.

7421056243 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421056243 is an equidigital number, since it uses as much as digits as its factorization.

7421056243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 7421056243 is about 86145.5526594380. The cubic root of 7421056243 is about 1950.5417073134.

The spelling of 7421056243 in words is "seven billion, four hundred twenty-one million, fifty-six thousand, two hundred forty-three".