42670171 has 4 divisors (see below), whose sum is σ = 43369744. Its totient is φ = 41970600.

The previous prime is 42670151. The next prime is 42670183. The reversal of 42670171 is 17107624.

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 42670171 - 2¹¹ = 42668123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42670151) 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, 349695 + ... + 349816.

It is an arithmetic number, because the mean of its divisors is an integer number (10842436).

Almost surely, 2^42670171 is an apocalyptic number.

42670171 is a deficient number, since it is larger than the sum of its proper divisors (699573).

42670171 is an equidigital number, since it uses as much as digits as its factorization.

42670171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699572.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 42670171 is about 6532.2408865565. The cubic root of 42670171 is about 349.4417522487.

Adding to 42670171 its reverse (17107624), we get a palindrome (59777795).

The spelling of 42670171 in words is "forty-two million, six hundred seventy thousand, one hundred seventy-one".