6542834321 has 2 divisors, whose sum is σ = 6542834322. Its totient is φ = 6542834320.

The previous prime is 6542834317. The next prime is 6542834351. The reversal of 6542834321 is 1234382456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3965850625 + 2576983696 = 62975^2 + 50764^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542834321 - 2² = 6542834317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6542834351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271417160 + 3271417161.

It is an arithmetic number, because the mean of its divisors is an integer number (3271417161).

Almost surely, 2^6542834321 is an apocalyptic number.

It is an amenable number.

6542834321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542834321 is an equidigital number, since it uses as much as digits as its factorization.

6542834321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 38.

The square root of 6542834321 is about 80887.7884541295. The cubic root of 6542834321 is about 1870.3460826285.

The spelling of 6542834321 in words is "six billion, five hundred forty-two million, eight hundred thirty-four thousand, three hundred twenty-one".