42398589 has 8 divisors (see below), whose sum is σ = 57247360. Its totient is φ = 27907776.

The previous prime is 42398579. The next prime is 42398593. The reversal of 42398589 is 98589324.

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

It is not a de Polignac number, because 42398589 - 2⁸ = 42398333 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 (42398509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89212 + ... + 89685.

It is an arithmetic number, because the mean of its divisors is an integer number (7155920).

Almost surely, 2^42398589 is an apocalyptic number.

It is an amenable number.

42398589 is a deficient number, since it is larger than the sum of its proper divisors (14848771).

42398589 is a wasteful number, since it uses less digits than its factorization.

42398589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178979.

The product of its digits is 622080, while the sum is 48.

The square root of 42398589 is about 6511.4198912372. The cubic root of 42398589 is about 348.6988121324.

The spelling of 42398589 in words is "forty-two million, three hundred ninety-eight thousand, five hundred eighty-nine".