7240373281 has 2 divisors, whose sum is σ = 7240373282. Its totient is φ = 7240373280.

The previous prime is 7240373267. The next prime is 7240373333. The reversal of 7240373281 is 1823730427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6402560256 + 837813025 = 80016^2 + 28945^2 .

It is an emirp because it is prime and its reverse (1823730427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7240373281 - 2²⁹ = 6703502369 is a prime.

It is a super-2 number, since 2×7240373281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7240373281.

It is not a weakly prime, because it can be changed into another prime (7240373201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3620186640 + 3620186641.

It is an arithmetic number, because the mean of its divisors is an integer number (3620186641).

Almost surely, 2^7240373281 is an apocalyptic number.

It is an amenable number.

7240373281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7240373281 is an equidigital number, since it uses as much as digits as its factorization.

7240373281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 7240373281 is about 85090.3830112428. The cubic root of 7240373281 is about 1934.5813008393.

The spelling of 7240373281 in words is "seven billion, two hundred forty million, three hundred seventy-three thousand, two hundred eighty-one".