7442310521 has 2 divisors, whose sum is σ = 7442310522. Its totient is φ = 7442310520.

The previous prime is 7442310517. The next prime is 7442310569. The reversal of 7442310521 is 1250132447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5236693225 + 2205617296 = 72365^2 + 46964^2 .

It is a cyclic number.

It is not a de Polignac number, because 7442310521 - 2² = 7442310517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7442310581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721155260 + 3721155261.

It is an arithmetic number, because the mean of its divisors is an integer number (3721155261).

Almost surely, 2^7442310521 is an apocalyptic number.

It is an amenable number.

7442310521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7442310521 is an equidigital number, since it uses as much as digits as its factorization.

7442310521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 7442310521 is about 86268.8270524180. The cubic root of 7442310521 is about 1952.4020821956.

Adding to 7442310521 its reverse (1250132447), we get a palindrome (8692442968).

The spelling of 7442310521 in words is "seven billion, four hundred forty-two million, three hundred ten thousand, five hundred twenty-one".