42558881 has 8 divisors (see below), whose sum is σ = 43088640. Its totient is φ = 42032592.

The previous prime is 42558853. The next prime is 42558889. The reversal of 42558881 is 18885524.

It is a happy number.

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 42558881 - 2¹⁴ = 42542497 is a prime.

It is a super-2 number, since 2×42558881² = 3622516703944322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42558889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30311 + ... + 31683.

It is an arithmetic number, because the mean of its divisors is an integer number (5386080).

Almost surely, 2^42558881 is an apocalyptic number.

It is an amenable number.

42558881 is a deficient number, since it is larger than the sum of its proper divisors (529759).

42558881 is a wasteful number, since it uses less digits than its factorization.

42558881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735.

The product of its digits is 102400, while the sum is 41.

The square root of 42558881 is about 6523.7168086912. The cubic root of 42558881 is about 349.1376894770.

The spelling of 42558881 in words is "forty-two million, five hundred fifty-eight thousand, eight hundred eighty-one".