42558285 has 32 divisors (see below), whose sum is σ = 84897792. Its totient is φ = 17686080.

The previous prime is 42558281. The next prime is 42558301. The reversal of 42558285 is 58285524.

It is not a de Polignac number, because 42558285 - 2² = 42558281 is a prime.

It is a super-2 number, since 2×42558285² = 3622415244282450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42558281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17269 + ... + 19578.

It is an arithmetic number, because the mean of its divisors is an integer number (2653056).

Almost surely, 2^42558285 is an apocalyptic number.

It is an amenable number.

42558285 is a deficient number, since it is larger than the sum of its proper divisors (42339507).

42558285 is a wasteful number, since it uses less digits than its factorization.

42558285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36873.

The product of its digits is 128000, while the sum is 39.

The square root of 42558285 is about 6523.6711290500. The cubic root of 42558285 is about 349.1360596798.

The spelling of 42558285 in words is "forty-two million, five hundred fifty-eight thousand, two hundred eighty-five".