42443017 has 4 divisors (see below), whose sum is σ = 44676880. Its totient is φ = 40209156.

The previous prime is 42442997. The next prime is 42443039. The reversal of 42443017 is 71034424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42443017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42442982 and 42443000.

It is not an unprimeable number, because it can be changed into a prime (42443087) 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, 1116903 + ... + 1116940.

It is an arithmetic number, because the mean of its divisors is an integer number (11169220).

Almost surely, 2^42443017 is an apocalyptic number.

It is an amenable number.

42443017 is a deficient number, since it is larger than the sum of its proper divisors (2233863).

42443017 is a wasteful number, since it uses less digits than its factorization.

42443017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233862.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 42443017 is about 6514.8305426926. The cubic root of 42443017 is about 348.8205660490.

The spelling of 42443017 in words is "forty-two million, four hundred forty-three thousand, seventeen".