42443243 has 4 divisors (see below), whose sum is σ = 43162680. Its totient is φ = 41723808.

The previous prime is 42443239. The next prime is 42443249. The reversal of 42443243 is 34234424.

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 42443243 - 2² = 42443239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42443249) 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, 359630 + ... + 359747.

It is an arithmetic number, because the mean of its divisors is an integer number (10790670).

Almost surely, 2^42443243 is an apocalyptic number.

42443243 is a deficient number, since it is larger than the sum of its proper divisors (719437).

42443243 is an equidigital number, since it uses as much as digits as its factorization.

42443243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719436.

The product of its digits is 9216, while the sum is 26.

The square root of 42443243 is about 6514.8478877100. The cubic root of 42443243 is about 348.8211851796.

Adding to 42443243 its reverse (34234424), we get a palindrome (76677667).

The spelling of 42443243 in words is "forty-two million, four hundred forty-three thousand, two hundred forty-three".