42371917 has 6 divisors (see below), whose sum is σ = 49289838. Its totient is φ = 36318744.

The previous prime is 42371873. The next prime is 42371941. The reversal of 42371917 is 71917324.

It can be written as a sum of positive squares in only one way, i.e., 28451556 + 13920361 = 5334^2 + 3731^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42371917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42371977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 432318 + ... + 432415.

It is an arithmetic number, because the mean of its divisors is an integer number (8214973).

Almost surely, 2^42371917 is an apocalyptic number.

It is an amenable number.

42371917 is a deficient number, since it is larger than the sum of its proper divisors (6917921).

42371917 is an equidigital number, since it uses as much as digits as its factorization.

42371917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864747 (or 864740 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 42371917 is about 6509.3714750351. The cubic root of 42371917 is about 348.6256772643.

The spelling of 42371917 in words is "forty-two million, three hundred seventy-one thousand, nine hundred seventeen".