143242423 has 4 divisors (see below), whose sum is σ = 144042840. Its totient is φ = 142442008.

The previous prime is 143242403. The next prime is 143242453. The reversal of 143242423 is 324242341.

It is a happy number.

143242423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324242341 = 3739 ⋅86719.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143242423 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 (143242403) 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, 399940 + ... + 400297.

It is an arithmetic number, because the mean of its divisors is an integer number (36010710).

Almost surely, 2^143242423 is an apocalyptic number.

143242423 is a deficient number, since it is larger than the sum of its proper divisors (800417).

143242423 is an equidigital number, since it uses as much as digits as its factorization.

143242423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800416.

The product of its digits is 4608, while the sum is 25.

The square root of 143242423 is about 11968.3926656841. The cubic root of 143242423 is about 523.2274893342.

Adding to 143242423 its reverse (324242341), we get a palindrome (467484764).

The spelling of 143242423 in words is "one hundred forty-three million, two hundred forty-two thousand, four hundred twenty-three".