12422142 has 12 divisors (see below), whose sum is σ = 26914680. Its totient is φ = 4140708.

The previous prime is 12422131. The next prime is 12422149. The reversal of 12422142 is 24122421.

It is a super-2 number, since 2×12422142² = 308619223736328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 690119 = 12422142 / (1 + 2 + 4 + 2 + 2 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345042 + ... + 345077.

It is an arithmetic number, because the mean of its divisors is an integer number (2242890).

Almost surely, 2^12422142 is an apocalyptic number.

12422142 is an abundant number, since it is smaller than the sum of its proper divisors (14492538).

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

12422142 is a wasteful number, since it uses less digits than its factorization.

12422142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690127 (or 690124 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 12422142 is about 3524.5059228210. The cubic root of 12422142 is about 231.5965913572.

Adding to 12422142 its reverse (24122421), we get a palindrome (36544563).

The spelling of 12422142 in words is "twelve million, four hundred twenty-two thousand, one hundred forty-two".