12042422 has 16 divisors (see below), whose sum is σ = 20839680. Its totient is φ = 5112168.

The previous prime is 12042421. The next prime is 12042439. The reversal of 12042422 is 22424021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12042422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042421) 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 in 7 ways as a sum of consecutive naturals, for example, 2522 + ... + 5517.

It is an arithmetic number, because the mean of its divisors is an integer number (1302480).

Almost surely, 2^12042422 is an apocalyptic number.

12042422 is a deficient number, since it is larger than the sum of its proper divisors (8797258).

12042422 is a wasteful number, since it uses less digits than its factorization.

12042422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 12042422 is about 3470.2193014275. The cubic root of 12042422 is about 229.2123149323.

Adding to 12042422 its reverse (22424021), we get a palindrome (34466443).

The spelling of 12042422 in words is "twelve million, forty-two thousand, four hundred twenty-two".