6942857 has 2 divisors, whose sum is σ = 6942858. Its totient is φ = 6942856.

The previous prime is 6942827. The next prime is 6942883. The reversal of 6942857 is 7582496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5456896 + 1485961 = 2336^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 6942857 - 2⁸ = 6942601 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (6942827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3471428 + 3471429.

It is an arithmetic number, because the mean of its divisors is an integer number (3471429).

Almost surely, 2^6942857 is an apocalyptic number.

It is an amenable number.

6942857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6942857 is an equidigital number, since it uses as much as digits as its factorization.

6942857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 6942857 is about 2634.9301698527. The cubic root of 6942857 is about 190.7711686223.

The spelling of 6942857 in words is "six million, nine hundred forty-two thousand, eight hundred fifty-seven".