42171589 has 8 divisors (see below), whose sum is σ = 43156800. Its totient is φ = 41197536.

The previous prime is 42171551. The next prime is 42171617. The reversal of 42171589 is 98517124.

42171589 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 a cyclic number.

It is not a de Polignac number, because 42171589 - 2¹³ = 42163397 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 (42171529) 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, 5112 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (5394600).

Almost surely, 2^42171589 is an apocalyptic number.

It is an amenable number.

42171589 is a deficient number, since it is larger than the sum of its proper divisors (985211).

42171589 is a wasteful number, since it uses less digits than its factorization.

42171589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579.

The product of its digits is 20160, while the sum is 37.

The square root of 42171589 is about 6493.9655835244. The cubic root of 42171589 is about 348.0753926802.

It can be divided in two parts, 421 and 71589, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 42171589 in words is "forty-two million, one hundred seventy-one thousand, five hundred eighty-nine".