123530666 has 24 divisors (see below), whose sum is σ = 226896480. Its totient is φ = 50154552.

The previous prime is 123530621. The next prime is 123530669. The reversal of 123530666 is 666035321.

It is not an unprimeable number, because it can be changed into a prime (123530669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31310 + ... + 35033.

It is an arithmetic number, because the mean of its divisors is an integer number (9454020).

Almost surely, 2^123530666 is an apocalyptic number.

123530666 is a deficient number, since it is larger than the sum of its proper divisors (103365814).

123530666 is a wasteful number, since it uses less digits than its factorization.

123530666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66378 (or 66371 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 123530666 is about 11114.4350283764. The cubic root of 123530666 is about 498.0331612354.

Adding to 123530666 its reverse (666035321), we get a palindrome (789565987).

The spelling of 123530666 in words is "one hundred twenty-three million, five hundred thirty thousand, six hundred sixty-six".