7434750721 has 2 divisors, whose sum is σ = 7434750722. Its totient is φ = 7434750720.

The previous prime is 7434750707. The next prime is 7434750767. The reversal of 7434750721 is 1270574347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7426130625 + 8620096 = 86175^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 7434750721 - 2⁵ = 7434750689 is a prime.

It is not a weakly prime, because it can be changed into another prime (7434750781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3717375360 + 3717375361.

It is an arithmetic number, because the mean of its divisors is an integer number (3717375361).

Almost surely, 2^7434750721 is an apocalyptic number.

It is an amenable number.

7434750721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7434750721 is an equidigital number, since it uses as much as digits as its factorization.

7434750721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 7434750721 is about 86225.0005566831. Note that the first 3 decimals coincide. The cubic root of 7434750721 is about 1951.7407835468.

The spelling of 7434750721 in words is "seven billion, four hundred thirty-four million, seven hundred fifty thousand, seven hundred twenty-one".