12306042 has 48 divisors (see below), whose sum is σ = 30805632. Its totient is φ = 3477600.

The previous prime is 12306037. The next prime is 12306061. The reversal of 12306042 is 24060321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12243 + ... + 13209.

It is an arithmetic number, because the mean of its divisors is an integer number (641784).

Almost surely, 2^12306042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12306042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15402816).

12306042 is an abundant number, since it is smaller than the sum of its proper divisors (18499590).

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

12306042 is a wasteful number, since it uses less digits than its factorization.

12306042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12306042 is about 3507.9968643087. The cubic root of 12306042 is about 230.8728146775.

Adding to 12306042 its reverse (24060321), we get a palindrome (36366363).

The spelling of 12306042 in words is "twelve million, three hundred six thousand, forty-two".