12306442 has 8 divisors (see below), whose sum is σ = 19055232. Its totient is φ = 5954700.

The previous prime is 12306439. The next prime is 12306443. The reversal of 12306442 is 24460321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12306443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99184 + ... + 99307.

It is an arithmetic number, because the mean of its divisors is an integer number (2381904).

Almost surely, 2^12306442 is an apocalyptic number.

12306442 is a deficient number, since it is larger than the sum of its proper divisors (6748790).

12306442 is a wasteful number, since it uses less digits than its factorization.

12306442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198524.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 12306442 is about 3508.0538764392. The cubic root of 12306442 is about 230.8753161080.

Adding to 12306442 its reverse (24460321), we get a palindrome (36766763).

The spelling of 12306442 in words is "twelve million, three hundred six thousand, four hundred forty-two".