12423442 has 8 divisors (see below), whose sum is σ = 18652032. Its totient is φ = 6206100.

The previous prime is 12423409. The next prime is 12423457. The reversal of 12423442 is 24432421.

It is a happy number.

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

It is a super-2 number, since 2×12423442² = 308683822254728, which contains 22 as substring.

It is an unprimeable number.

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, 967 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (2331504).

Almost surely, 2^12423442 is an apocalyptic number.

12423442 is a deficient number, since it is larger than the sum of its proper divisors (6228590).

12423442 is a wasteful number, since it uses less digits than its factorization.

12423442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5624.

The product of its digits is 1536, while the sum is 22.

The square root of 12423442 is about 3524.6903410087. The cubic root of 12423442 is about 231.6046700784.

Adding to 12423442 its reverse (24432421), we get a palindrome (36855863).

The spelling of 12423442 in words is "twelve million, four hundred twenty-three thousand, four hundred forty-two".