42508858 has 16 divisors (see below), whose sum is σ = 73168704. Its totient is φ = 18144000.

The previous prime is 42508847. The next prime is 42508859. The reversal of 42508858 is 85880524.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42508858.

It is not an unprimeable number, because it can be changed into a prime (42508859) 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, 2535 + ... + 9562.

It is an arithmetic number, because the mean of its divisors is an integer number (4573044).

Almost surely, 2^42508858 is an apocalyptic number.

42508858 is a deficient number, since it is larger than the sum of its proper divisors (30659846).

42508858 is a wasteful number, since it uses less digits than its factorization.

42508858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12357.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 42508858 is about 6519.8817473939. The cubic root of 42508858 is about 349.0008456396. Note that the first 3 decimals are identical.

The spelling of 42508858 in words is "forty-two million, five hundred eight thousand, eight hundred fifty-eight".