42257858 has 8 divisors (see below), whose sum is σ = 63640080. Its totient is φ = 21044500.

The previous prime is 42257857. The next prime is 42257861. The reversal of 42257858 is 85875224.

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

It is not an unprimeable number, because it can be changed into a prime (42257857) 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 3 ways as a sum of consecutive naturals, for example, 41588 + ... + 42591.

It is an arithmetic number, because the mean of its divisors is an integer number (7955010).

Almost surely, 2^42257858 is an apocalyptic number.

42257858 is a deficient number, since it is larger than the sum of its proper divisors (21382222).

42257858 is a wasteful number, since it uses less digits than its factorization.

42257858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84432.

The product of its digits is 179200, while the sum is 41.

The square root of 42257858 is about 6500.6044334354. The cubic root of 42257858 is about 348.3125797230.

The spelling of 42257858 in words is "forty-two million, two hundred fifty-seven thousand, eight hundred fifty-eight".