42257338 has 8 divisors (see below), whose sum is σ = 63967860. Its totient is φ = 20934720.

The previous prime is 42257333. The next prime is 42257381. The reversal of 42257338 is 83375224.

42257338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41951529 + 305809 = 6477^2 + 553^2 .

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

It is a super-2 number, since 2×42257338² = 3571365229692488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42257333) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 96703 + ... + 97138.

Almost surely, 2^42257338 is an apocalyptic number.

42257338 is a deficient number, since it is larger than the sum of its proper divisors (21710522).

42257338 is a wasteful number, since it uses less digits than its factorization.

42257338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193952.

The product of its digits is 40320, while the sum is 34.

The square root of 42257338 is about 6500.5644370316. The cubic root of 42257338 is about 348.3111510081.

The spelling of 42257338 in words is "forty-two million, two hundred fifty-seven thousand, three hundred thirty-eight".