42343423 has 4 divisors (see below), whose sum is σ = 42363360. Its totient is φ = 42323488.

The previous prime is 42343421. The next prime is 42343439. The reversal of 42343423 is 32434324.

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 42343423 - 2¹ = 42343421 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 (42343421) 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, 6343 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (10590840).

Almost surely, 2^42343423 is an apocalyptic number.

42343423 is a deficient number, since it is larger than the sum of its proper divisors (19937).

42343423 is a wasteful number, since it uses less digits than its factorization.

42343423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19936.

The product of its digits is 6912, while the sum is 25.

The square root of 42343423 is about 6507.1824163765. The cubic root of 42343423 is about 348.5475125402.

Adding to 42343423 its reverse (32434324), we get a palindrome (74777747).

Subtracting from 42343423 its reverse (32434324), we obtain a palindrome (9909099).

The spelling of 42343423 in words is "forty-two million, three hundred forty-three thousand, four hundred twenty-three".