123132666 has 32 divisors (see below), whose sum is σ = 269749440. Its totient is φ = 37296896.

The previous prime is 123132661. The next prime is 123132679. The reversal of 123132666 is 666231321.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (123132661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17856 + ... + 23771.

It is an arithmetic number, because the mean of its divisors is an integer number (8429670).

Almost surely, 2^123132666 is an apocalyptic number.

123132666 is an abundant number, since it is smaller than the sum of its proper divisors (146616774).

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

123132666 is a wasteful number, since it uses less digits than its factorization.

123132666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41678.

The product of its digits is 7776, while the sum is 30.

The square root of 123132666 is about 11096.5159396993. The cubic root of 123132666 is about 497.4977194074.

Adding to 123132666 its reverse (666231321), we get a palindrome (789363987).

The spelling of 123132666 in words is "one hundred twenty-three million, one hundred thirty-two thousand, six hundred sixty-six".