42457118 has 8 divisors (see below), whose sum is σ = 69475320. Its totient is φ = 19298680.

The previous prime is 42457111. The next prime is 42457127. The reversal of 42457118 is 81175424.

It is a happy number.

42457118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42457111) 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, 964913 + ... + 964956.

It is an arithmetic number, because the mean of its divisors is an integer number (8684415).

Almost surely, 2^42457118 is an apocalyptic number.

42457118 is a deficient number, since it is larger than the sum of its proper divisors (27018202).

42457118 is a wasteful number, since it uses less digits than its factorization.

42457118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929882.

The product of its digits is 8960, while the sum is 32.

The square root of 42457118 is about 6515.9126759035. The cubic root of 42457118 is about 348.8591917526.

The spelling of 42457118 in words is "forty-two million, four hundred fifty-seven thousand, one hundred eighteen".