8742520313 has 2 divisors, whose sum is σ = 8742520314. Its totient is φ = 8742520312.

The previous prime is 8742520261. The next prime is 8742520327. The reversal of 8742520313 is 3130252478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5729278864 + 3013241449 = 75692^2 + 54893^2 .

It is a cyclic number.

It is not a de Polignac number, because 8742520313 - 2²⁶ = 8675411449 is a prime.

It is a super-2 number, since 2×8742520313² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8742520343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4371260156 + 4371260157.

It is an arithmetic number, because the mean of its divisors is an integer number (4371260157).

Almost surely, 2^8742520313 is an apocalyptic number.

It is an amenable number.

8742520313 is a deficient number, since it is larger than the sum of its proper divisors (1).

8742520313 is an equidigital number, since it uses as much as digits as its factorization.

8742520313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 8742520313 is about 93501.4455128903. The cubic root of 8742520313 is about 2060.0553220603.

The spelling of 8742520313 in words is "eight billion, seven hundred forty-two million, five hundred twenty thousand, three hundred thirteen".