42423023 has 4 divisors (see below), whose sum is σ = 42530280. Its totient is φ = 42315768.

The previous prime is 42423011. The next prime is 42423049. The reversal of 42423023 is 32032424.

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 42423023 - 2⁶ = 42422959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42422986 and 42423004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42423223) 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, 53033 + ... + 53826.

It is an arithmetic number, because the mean of its divisors is an integer number (10632570).

Almost surely, 2^42423023 is an apocalyptic number.

42423023 is a deficient number, since it is larger than the sum of its proper divisors (107257).

42423023 is a wasteful number, since it uses less digits than its factorization.

42423023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107256.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 42423023 is about 6513.2958630788. The cubic root of 42423023 is about 348.7657834697.

Adding to 42423023 its reverse (32032424), we get a palindrome (74455447).

The spelling of 42423023 in words is "forty-two million, four hundred twenty-three thousand, twenty-three".