6942221 has 16 divisors (see below), whose sum is σ = 8352960. Its totient is φ = 5685120.

The previous prime is 6942217. The next prime is 6942241. The reversal of 6942221 is 1222496.

6942221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6942221 - 2² = 6942217 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6942211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5585 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (522060).

Almost surely, 2^6942221 is an apocalyptic number.

It is an amenable number.

6942221 is a deficient number, since it is larger than the sum of its proper divisors (1410739).

6942221 is a wasteful number, since it uses less digits than its factorization.

6942221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its digits is 1728, while the sum is 26.

The square root of 6942221 is about 2634.8094807784. The cubic root of 6942221 is about 190.7653432505.

The spelling of 6942221 in words is "six million, nine hundred forty-two thousand, two hundred twenty-one".