6818242 has 4 divisors (see below), whose sum is σ = 10227366. Its totient is φ = 3409120.

The previous prime is 6818239. The next prime is 6818257. The reversal of 6818242 is 2428186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2428186 = 2 ⋅1214093.

It can be written as a sum of positive squares in only one way, i.e., 4541161 + 2277081 = 2131^2 + 1509^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704559 + ... + 1704562.

Almost surely, 2^6818242 is an apocalyptic number.

6818242 is a deficient number, since it is larger than the sum of its proper divisors (3409124).

6818242 is a wasteful number, since it uses less digits than its factorization.

6818242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409123.

The product of its digits is 6144, while the sum is 31.

The square root of 6818242 is about 2611.1763632509. The cubic root of 6818242 is about 189.6229085947.

The spelling of 6818242 in words is "six million, eight hundred eighteen thousand, two hundred forty-two".