4143423 has 4 divisors (see below), whose sum is σ = 5524568. Its totient is φ = 2762280.

The previous prime is 4143421. The next prime is 4143449. The reversal of 4143423 is 3243414.

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

It is not a de Polignac number, because 4143423 - 2¹ = 4143421 is a prime.

It is an Ulam number.

It is a D-number.

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 4143423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4143421) 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, 690568 + ... + 690573.

It is an arithmetic number, because the mean of its divisors is an integer number (1381142).

Almost surely, 2^4143423 is an apocalyptic number.

4143423 is a deficient number, since it is larger than the sum of its proper divisors (1381145).

4143423 is a wasteful number, since it uses less digits than its factorization.

4143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381144.

The product of its digits is 1152, while the sum is 21.

The square root of 4143423 is about 2035.5399774998. The cubic root of 4143423 is about 160.6151191265.

Adding to 4143423 its reverse (3243414), we get a palindrome (7386837).

Subtracting from 4143423 its reverse (3243414), we obtain a palindrome (900009).

The spelling of 4143423 in words is "four million, one hundred forty-three thousand, four hundred twenty-three".