342243666 has 12 divisors (see below), whose sum is σ = 741527982. Its totient is φ = 114081216.

The previous prime is 342243653. The next prime is 342243683. The reversal of 342243666 is 666342243.

It can be written as a sum of positive squares in only one way, i.e., 247590225 + 94653441 = 15735^2 + 9729^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 342243666.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 9506751 + ... + 9506786.

Almost surely, 2^342243666 is an apocalyptic number.

342243666 is an abundant number, since it is smaller than the sum of its proper divisors (399284316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342243666 is a wasteful number, since it uses less digits than its factorization.

342243666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013545 (or 19013542 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 342243666 is about 18499.8288100188. The cubic root of 342243666 is about 699.4851084344.

The spelling of 342243666 in words is "three hundred forty-two million, two hundred forty-three thousand, six hundred sixty-six".