42112243 has 4 divisors (see below), whose sum is σ = 42200640. Its totient is φ = 42023848.

The previous prime is 42112211. The next prime is 42112261. The reversal of 42112243 is 34221124.

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 42112243 - 2⁵ = 42112211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42112243.

It is not an unprimeable number, because it can be changed into a prime (42112643) 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, 43480 + ... + 44437.

It is an arithmetic number, because the mean of its divisors is an integer number (10550160).

Almost surely, 2^42112243 is an apocalyptic number.

42112243 is a deficient number, since it is larger than the sum of its proper divisors (88397).

42112243 is an equidigital number, since it uses as much as digits as its factorization.

42112243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88396.

The product of its digits is 384, while the sum is 19.

The square root of 42112243 is about 6489.3946558982. The cubic root of 42112243 is about 347.9120395781.

Adding to 42112243 its reverse (34221124), we get a palindrome (76333367).

The spelling of 42112243 in words is "forty-two million, one hundred twelve thousand, two hundred forty-three".