42871173 has 8 divisors (see below), whose sum is σ = 57222048. Its totient is φ = 28550544.

The previous prime is 42871159. The next prime is 42871177. The reversal of 42871173 is 37117824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42871173 - 2⁹ = 42870661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42871177) 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 7 ways as a sum of consecutive naturals, for example, 4015 + ... + 10092.

It is an arithmetic number, because the mean of its divisors is an integer number (7152756).

Almost surely, 2^42871173 is an apocalyptic number.

It is an amenable number.

42871173 is a deficient number, since it is larger than the sum of its proper divisors (14350875).

42871173 is a wasteful number, since it uses less digits than its factorization.

42871173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123.

The product of its digits is 9408, while the sum is 33.

The square root of 42871173 is about 6547.6081892551. The cubic root of 42871173 is about 349.9895860847.

Adding to 42871173 its reverse (37117824), we get a palindrome (79988997).

It can be divided in two parts, 4287 and 1173, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 42871173 in words is "forty-two million, eight hundred seventy-one thousand, one hundred seventy-three".