6542405141 has 2 divisors, whose sum is σ = 6542405142. Its totient is φ = 6542405140.

The previous prime is 6542405117. The next prime is 6542405143. The reversal of 6542405141 is 1415042456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5997882916 + 544522225 = 77446^2 + 23335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6542405141 is a prime.

Together with 6542405143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6542405098 and 6542405107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6542405143) 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, 3271202570 + 3271202571.

It is an arithmetic number, because the mean of its divisors is an integer number (3271202571).

Almost surely, 2^6542405141 is an apocalyptic number.

It is an amenable number.

6542405141 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542405141 is an equidigital number, since it uses as much as digits as its factorization.

6542405141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 6542405141 is about 80885.1354761800. The cubic root of 6542405141 is about 1870.3051863520.

Adding to 6542405141 its reverse (1415042456), we get a palindrome (7957447597).

The spelling of 6542405141 in words is "six billion, five hundred forty-two million, four hundred five thousand, one hundred forty-one".