42717589 has 4 divisors (see below), whose sum is σ = 42838956. Its totient is φ = 42596224.

The previous prime is 42717581. The next prime is 42717599. The reversal of 42717589 is 98571724.

42717589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28804689 + 13912900 = 5367^2 + 3730^2 .

It is a cyclic number.

It is not a de Polignac number, because 42717589 - 2³ = 42717581 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 (42717581) 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 3 ways as a sum of consecutive naturals, for example, 60154 + ... + 60859.

It is an arithmetic number, because the mean of its divisors is an integer number (10709739).

Almost surely, 2^42717589 is an apocalyptic number.

It is an amenable number.

42717589 is a deficient number, since it is larger than the sum of its proper divisors (121367).

42717589 is a wasteful number, since it uses less digits than its factorization.

42717589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121366.

The product of its digits is 141120, while the sum is 43.

The square root of 42717589 is about 6535.8694142402. The cubic root of 42717589 is about 349.5711454881.

The spelling of 42717589 in words is "forty-two million, seven hundred seventeen thousand, five hundred eighty-nine".