7420521443 has 2 divisors, whose sum is σ = 7420521444. Its totient is φ = 7420521442.

The previous prime is 7420521431. The next prime is 7420521457. The reversal of 7420521443 is 3441250247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7420521443 - 2⁶ = 7420521379 is a prime.

It is not a weakly prime, because it can be changed into another prime (7420521343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710260721 + 3710260722.

It is an arithmetic number, because the mean of its divisors is an integer number (3710260722).

Almost surely, 2^7420521443 is an apocalyptic number.

7420521443 is a deficient number, since it is larger than the sum of its proper divisors (1).

7420521443 is an equidigital number, since it uses as much as digits as its factorization.

7420521443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 7420521443 is about 86142.4485547050. The cubic root of 7420521443 is about 1950.4948507865.

The spelling of 7420521443 in words is "seven billion, four hundred twenty million, five hundred twenty-one thousand, four hundred forty-three".