42172671 has 8 divisors (see below), whose sum is σ = 56272384. Its totient is φ = 28094040.

The previous prime is 42172667. The next prime is 42172673. The reversal of 42172671 is 17627124.

42172671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42172671 - 2² = 42172667 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 (42172673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (7034048).

Almost surely, 2^42172671 is an apocalyptic number.

42172671 is a deficient number, since it is larger than the sum of its proper divisors (14099713).

42172671 is a wasteful number, since it uses less digits than its factorization.

42172671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541.

The product of its digits is 4704, while the sum is 30.

The square root of 42172671 is about 6494.0488911002. The cubic root of 42172671 is about 348.0783695212.

Adding to 42172671 its reverse (17627124), we get a palindrome (59799795).

The spelling of 42172671 in words is "forty-two million, one hundred seventy-two thousand, six hundred seventy-one".