12042423 has 12 divisors (see below), whose sum is σ = 17473560. Its totient is φ = 7991856.

The previous prime is 12042421. The next prime is 12042439. The reversal of 12042423 is 32424021.

It is not a de Polignac number, because 12042423 - 2¹ = 12042421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12042396 and 12042405.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861 + ... + 4982.

It is an arithmetic number, because the mean of its divisors is an integer number (1456130).

Almost surely, 2^12042423 is an apocalyptic number.

12042423 is a deficient number, since it is larger than the sum of its proper divisors (5431137).

12042423 is a wasteful number, since it uses less digits than its factorization.

12042423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078 (or 6075 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12042423 is about 3470.2194455106. The cubic root of 12042423 is about 229.2123212769.

Adding to 12042423 its reverse (32424021), we get a palindrome (44466444).

The spelling of 12042423 in words is "twelve million, forty-two thousand, four hundred twenty-three".