42589943 has 12 divisors (see below), whose sum is σ = 47816160. Its totient is φ = 37889280.

The previous prime is 42589907. The next prime is 42589991. The reversal of 42589943 is 34998524.

It is not a de Polignac number, because 42589943 - 2¹⁶ = 42524407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42589894 and 42589903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42589903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1943 + ... + 9431.

It is an arithmetic number, because the mean of its divisors is an integer number (3984680).

Almost surely, 2^42589943 is an apocalyptic number.

42589943 is a deficient number, since it is larger than the sum of its proper divisors (5226217).

42589943 is a wasteful number, since it uses less digits than its factorization.

42589943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7558 (or 7547 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 42589943 is about 6526.0970725235. The cubic root of 42589943 is about 349.2226092971. Note that the first 3 decimals are identical.

It can be divided in two parts, 42 and 589943, that added together give a palindrome (589985).

The spelling of 42589943 in words is "forty-two million, five hundred eighty-nine thousand, nine hundred forty-three".