6400242413 has 2 divisors, whose sum is σ = 6400242414. Its totient is φ = 6400242412.

The previous prime is 6400242379. The next prime is 6400242439. The reversal of 6400242413 is 3142420046.

It is an a-pointer prime, because the next prime (6400242439) can be obtained adding 6400242413 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5523016489 + 877225924 = 74317^2 + 29618^2 .

It is a cyclic number.

It is not a de Polignac number, because 6400242413 - 2⁸ = 6400242157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6400242463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200121206 + 3200121207.

It is an arithmetic number, because the mean of its divisors is an integer number (3200121207).

Almost surely, 2^6400242413 is an apocalyptic number.

It is an amenable number.

6400242413 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400242413 is an equidigital number, since it uses as much as digits as its factorization.

6400242413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 6400242413 is about 80001.5150669036. The cubic root of 6400242413 is about 1856.6589744299.

Adding to 6400242413 its reverse (3142420046), we get a palindrome (9542662459).

The spelling of 6400242413 in words is "six billion, four hundred million, two hundred forty-two thousand, four hundred thirteen".