123144423 has 8 divisors (see below), whose sum is σ = 164267136. Its totient is φ = 82059000.

The previous prime is 123144383. The next prime is 123144449. The reversal of 123144423 is 324441321.

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

It is not a de Polignac number, because 123144423 - 2¹² = 123140327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123144393 and 123144402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123144223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393 + ... + 15698.

It is an arithmetic number, because the mean of its divisors is an integer number (20533392).

Almost surely, 2^123144423 is an apocalyptic number.

123144423 is a deficient number, since it is larger than the sum of its proper divisors (41122713).

123144423 is a wasteful number, since it uses less digits than its factorization.

123144423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18645.

The product of its digits is 2304, while the sum is 24.

The square root of 123144423 is about 11097.0456879297. The cubic root of 123144423 is about 497.5135529922.

Adding to 123144423 its reverse (324441321), we get a palindrome (447585744).

It can be divided in two parts, 1231 and 44423, that added together give a palindrome (45654).

The spelling of 123144423 in words is "one hundred twenty-three million, one hundred forty-four thousand, four hundred twenty-three".