7240965139 has 2 divisors, whose sum is σ = 7240965140. Its totient is φ = 7240965138.

The previous prime is 7240965107. The next prime is 7240965143. The reversal of 7240965139 is 9315690427.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9315690427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7240965139 - 2⁵ = 7240965107 is a prime.

It is a super-2 number, since 2×7240965139² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7240965239) 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, 3620482569 + 3620482570.

It is an arithmetic number, because the mean of its divisors is an integer number (3620482570).

Almost surely, 2^7240965139 is an apocalyptic number.

7240965139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7240965139 is an equidigital number, since it uses as much as digits as its factorization.

7240965139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 7240965139 is about 85093.8607597516. The cubic root of 7240965139 is about 1934.6340129568.

The spelling of 7240965139 in words is "seven billion, two hundred forty million, nine hundred sixty-five thousand, one hundred thirty-nine".