12666042 has 24 divisors (see below), whose sum is σ = 28329600. Its totient is φ = 4085640.

The previous prime is 12666029. The next prime is 12666047. The reversal of 12666042 is 24066621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12665997 and 12666015.

It is not an unprimeable number, because it can be changed into a prime (12666047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10792 + ... + 11907.

It is an arithmetic number, because the mean of its divisors is an integer number (1180400).

Almost surely, 2^12666042 is an apocalyptic number.

12666042 is an abundant number, since it is smaller than the sum of its proper divisors (15663558).

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

12666042 is a wasteful number, since it uses less digits than its factorization.

12666042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22738 (or 22735 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12666042 is about 3558.9383248379. The cubic root of 12666042 is about 233.1025232351.

The spelling of 12666042 in words is "twelve million, six hundred sixty-six thousand, forty-two".