42423243 has 8 divisors (see below), whose sum is σ = 57491856. Its totient is φ = 27818400.

The previous prime is 42423229. The next prime is 42423263. The reversal of 42423243 is 34232424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42423243 - 2²⁰ = 41374667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42423203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115728 + ... + 116093.

It is an arithmetic number, because the mean of its divisors is an integer number (7186482).

Almost surely, 2^42423243 is an apocalyptic number.

42423243 is a deficient number, since it is larger than the sum of its proper divisors (15068613).

42423243 is a wasteful number, since it uses less digits than its factorization.

42423243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231885.

The product of its digits is 4608, while the sum is 24.

The square root of 42423243 is about 6513.3127515881. The cubic root of 42423243 is about 348.7663863525.

Adding to 42423243 its reverse (34232424), we get a palindrome (76655667).

The spelling of 42423243 in words is "forty-two million, four hundred twenty-three thousand, two hundred forty-three".