23142043 has 4 divisors (see below), whose sum is σ = 23164128. Its totient is φ = 23119960.

The previous prime is 23142017. The next prime is 23142107. The reversal of 23142043 is 34024132.

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 23142043 - 2⁵ = 23142011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23142043.

It is not an unprimeable number, because it can be changed into a prime (23142943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9388 + ... + 11593.

It is an arithmetic number, because the mean of its divisors is an integer number (5791032).

Almost surely, 2^23142043 is an apocalyptic number.

23142043 is a deficient number, since it is larger than the sum of its proper divisors (22085).

23142043 is a wasteful number, since it uses less digits than its factorization.

23142043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22084.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 23142043 is about 4810.6177358007. The cubic root of 23142043 is about 284.9709337342.

Adding to 23142043 its reverse (34024132), we get a palindrome (57166175).

The spelling of 23142043 in words is "twenty-three million, one hundred forty-two thousand, forty-three".