12266542 has 4 divisors (see below), whose sum is σ = 18399816. Its totient is φ = 6133270.

The previous prime is 12266519. The next prime is 12266543. The reversal of 12266542 is 24566221.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12266542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12266543) by changing a digit.

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 as a sum of consecutive naturals, namely, 3066634 + ... + 3066637.

It is an arithmetic number, because the mean of its divisors is an integer number (4599954).

Almost surely, 2^12266542 is an apocalyptic number.

12266542 is a deficient number, since it is larger than the sum of its proper divisors (6133274).

12266542 is an equidigital number, since it uses as much as digits as its factorization.

12266542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6133273.

The product of its digits is 5760, while the sum is 28.

The square root of 12266542 is about 3502.3623456176. The cubic root of 12266542 is about 230.6255309756.

The spelling of 12266542 in words is "twelve million, two hundred sixty-six thousand, five hundred forty-two".