42655585 has 8 divisors (see below), whose sum is σ = 58499136. Its totient is φ = 29249520.

The previous prime is 42655577. The next prime is 42655603. The reversal of 42655585 is 58555624.

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

It is not a de Polignac number, because 42655585 - 2³ = 42655577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609331 + ... + 609400.

It is an arithmetic number, because the mean of its divisors is an integer number (7312392).

Almost surely, 2^42655585 is an apocalyptic number.

It is an amenable number.

42655585 is a deficient number, since it is larger than the sum of its proper divisors (15843551).

42655585 is a wasteful number, since it uses less digits than its factorization.

42655585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218743.

The product of its digits is 240000, while the sum is 40.

The square root of 42655585 is about 6531.1243289345. The cubic root of 42655585 is about 349.4019310015.

The spelling of 42655585 in words is "forty-two million, six hundred fifty-five thousand, five hundred eighty-five".