42444123 has 4 divisors (see below), whose sum is σ = 56592168. Its totient is φ = 28296080.

The previous prime is 42444097. The next prime is 42444133. The reversal of 42444123 is 32144424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42444123 - 2¹⁰ = 42443099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42444093 and 42444102.

It is not an unprimeable number, because it can be changed into a prime (42444133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7074018 + ... + 7074023.

It is an arithmetic number, because the mean of its divisors is an integer number (14148042).

Almost surely, 2^42444123 is an apocalyptic number.

42444123 is a deficient number, since it is larger than the sum of its proper divisors (14148045).

42444123 is a wasteful number, since it uses less digits than its factorization.

42444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14148044.

The product of its digits is 3072, while the sum is 24.

The square root of 42444123 is about 6514.9154253912. The cubic root of 42444123 is about 348.8235959325.

Adding to 42444123 its reverse (32144424), we get a palindrome (74588547).

The spelling of 42444123 in words is "forty-two million, four hundred forty-four thousand, one hundred twenty-three".