42005125163 has 4 divisors (see below), whose sum is σ = 42008269320. Its totient is φ = 42001981008.

The previous prime is 42005125153. The next prime is 42005125213. The reversal of 42005125163 is 36152150024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42005125163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42005125133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551953 + ... + 1578786.

It is an arithmetic number, because the mean of its divisors is an integer number (10502067330).

Almost surely, 2^42005125163 is an apocalyptic number.

42005125163 is a deficient number, since it is larger than the sum of its proper divisors (3144157).

42005125163 is a wasteful number, since it uses less digits than its factorization.

42005125163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144156.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 42005125163 its reverse (36152150024), we get a palindrome (78157275187).

The spelling of 42005125163 in words is "forty-two billion, five million, one hundred twenty-five thousand, one hundred sixty-three".