42256238 has 4 divisors (see below), whose sum is σ = 63384360. Its totient is φ = 21128118.

The previous prime is 42256189. The next prime is 42256241. The reversal of 42256238 is 83265224.

42256238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10564058 + ... + 10564061.

It is an arithmetic number, because the mean of its divisors is an integer number (15846090).

Almost surely, 2^42256238 is an apocalyptic number.

42256238 is a deficient number, since it is larger than the sum of its proper divisors (21128122).

42256238 is a wasteful number, since it uses less digits than its factorization.

42256238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21128121.

The product of its digits is 23040, while the sum is 32.

The square root of 42256238 is about 6500.4798284434. The cubic root of 42256238 is about 348.3081286882.

The spelling of 42256238 in words is "forty-two million, two hundred fifty-six thousand, two hundred thirty-eight".