42430243 has 4 divisors (see below), whose sum is σ = 42508360. Its totient is φ = 42352128.

The previous prime is 42430139. The next prime is 42430253. The reversal of 42430243 is 34203424.

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 42430243 - 2¹⁷ = 42299171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42430253) 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, 38238 + ... + 39331.

It is an arithmetic number, because the mean of its divisors is an integer number (10627090).

Almost surely, 2^42430243 is an apocalyptic number.

42430243 is a deficient number, since it is larger than the sum of its proper divisors (78117).

42430243 is an equidigital number, since it uses as much as digits as its factorization.

42430243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78116.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42430243 is about 6513.8500903843. The cubic root of 42430243 is about 348.7855679007.

Adding to 42430243 its reverse (34203424), we get a palindrome (76633667).

The spelling of 42430243 in words is "forty-two million, four hundred thirty thousand, two hundred forty-three".