123424040143 has 4 divisors (see below), whose sum is σ = 123590156688. Its totient is φ = 123257923600.

The previous prime is 123424040123. The next prime is 123424040177. The reversal of 123424040143 is 341040424321.

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 123424040143 - 2¹⁷ = 123423909071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123424040123) 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, 83057158 + ... + 83058643.

It is an arithmetic number, because the mean of its divisors is an integer number (30897539172).

Almost surely, 2^123424040143 is an apocalyptic number.

123424040143 is a deficient number, since it is larger than the sum of its proper divisors (166116545).

123424040143 is an equidigital number, since it uses as much as digits as its factorization.

123424040143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166116544.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123424040143 its reverse (341040424321), we get a palindrome (464464464464).

The spelling of 123424040143 in words is "one hundred twenty-three billion, four hundred twenty-four million, forty thousand, one hundred forty-three".