123666132 has 12 divisors (see below), whose sum is σ = 288554336. Its totient is φ = 41222040.

The previous prime is 123666113. The next prime is 123666139. The reversal of 123666132 is 231666321.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a self number, because there is not a number n which added to its sum of digits gives 123666132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123666139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5152744 + ... + 5152767.

Almost surely, 2^123666132 is an apocalyptic number.

123666132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123666132 is an abundant number, since it is smaller than the sum of its proper divisors (164888204).

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

123666132 is a wasteful number, since it uses less digits than its factorization.

123666132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305518 (or 10305516 counting only the distinct ones).

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

The square root of 123666132 is about 11120.5275054738. The cubic root of 123666132 is about 498.2151455035.

The spelling of 123666132 in words is "one hundred twenty-three million, six hundred sixty-six thousand, one hundred thirty-two".