42861173 has 4 divisors (see below), whose sum is σ = 43500960. Its totient is φ = 42221388.

The previous prime is 42861151. The next prime is 42861179. The reversal of 42861173 is 37116824.

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 not a de Polignac number, because 42861173 - 2⁶ = 42861109 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 (42861179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319793 + ... + 319926.

It is an arithmetic number, because the mean of its divisors is an integer number (10875240).

Almost surely, 2^42861173 is an apocalyptic number.

It is an amenable number.

42861173 is a deficient number, since it is larger than the sum of its proper divisors (639787).

42861173 is an equidigital number, since it uses as much as digits as its factorization.

42861173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639786.

The product of its digits is 8064, while the sum is 32.

The square root of 42861173 is about 6546.8445070889. The cubic root of 42861173 is about 349.9623714649.

Adding to 42861173 its reverse (37116824), we get a palindrome (79977997).

It can be divided in two parts, 42861 and 173, that added together give a palindrome (43034).

The spelling of 42861173 in words is "forty-two million, eight hundred sixty-one thousand, one hundred seventy-three".