42558550 has 12 divisors (see below), whose sum is σ = 79158996. Its totient is φ = 17023400.

The previous prime is 42558539. The next prime is 42558553. The reversal of 42558550 is 5585524.

It is a super-2 number, since 2×42558550² = 3622460356205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42558553) 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 5 ways as a sum of consecutive naturals, for example, 425536 + ... + 425635.

It is an arithmetic number, because the mean of its divisors is an integer number (6596583).

Almost surely, 2^42558550 is an apocalyptic number.

42558550 is a deficient number, since it is larger than the sum of its proper divisors (36600446).

42558550 is a wasteful number, since it uses less digits than its factorization.

42558550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851183 (or 851178 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The square root of 42558550 is about 6523.6914396682. The cubic root of 42558550 is about 349.1367843398.

The spelling of 42558550 in words is "forty-two million, five hundred fifty-eight thousand, five hundred fifty".