42851138 has 8 divisors (see below), whose sum is σ = 70120080. Its totient is φ = 19477780.

The previous prime is 42851131. The next prime is 42851147. The reversal of 42851138 is 83115824.

42851138 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 Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42851131) 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, 973868 + ... + 973911.

It is an arithmetic number, because the mean of its divisors is an integer number (8765010).

Almost surely, 2^42851138 is an apocalyptic number.

42851138 is a deficient number, since it is larger than the sum of its proper divisors (27268942).

42851138 is a wasteful number, since it uses less digits than its factorization.

42851138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947792.

The product of its digits is 7680, while the sum is 32.

The square root of 42851138 is about 6546.0780624737. The cubic root of 42851138 is about 349.9350573384.

The spelling of 42851138 in words is "forty-two million, eight hundred fifty-one thousand, one hundred thirty-eight".