42006163 has 4 divisors (see below), whose sum is σ = 42033880. Its totient is φ = 41978448.

The previous prime is 42006161. The next prime is 42006191. The reversal of 42006163 is 36160024.

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 42006163 - 2¹ = 42006161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42006161) 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, 11445 + ... + 14662.

It is an arithmetic number, because the mean of its divisors is an integer number (10508470).

Almost surely, 2^42006163 is an apocalyptic number.

42006163 is a deficient number, since it is larger than the sum of its proper divisors (27717).

42006163 is a wasteful number, since it uses less digits than its factorization.

42006163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27716.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 42006163 is about 6481.2161667391. The cubic root of 42006163 is about 347.6196658414.

Adding to 42006163 its reverse (36160024), we get a palindrome (78166187).

The spelling of 42006163 in words is "forty-two million, six thousand, one hundred sixty-three".