42843138 has 32 divisors (see below), whose sum is σ = 97137600. Its totient is φ = 12488256.

The previous prime is 42843109. The next prime is 42843139. The reversal of 42843138 is 83134824.

It is a junction number, because it is equal to n+sod(n) for n = 42843099 and 42843108.

It is not an unprimeable number, because it can be changed into a prime (42843139) 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 15 ways as a sum of consecutive naturals, for example, 12973 + ... + 15936.

It is an arithmetic number, because the mean of its divisors is an integer number (3035550).

Almost surely, 2^42843138 is an apocalyptic number.

42843138 is an abundant number, since it is smaller than the sum of its proper divisors (54294462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42843138 is a wasteful number, since it uses less digits than its factorization.

42843138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28946.

The product of its digits is 18432, while the sum is 33.

The square root of 42843138 is about 6545.4669810488. The cubic root of 42843138 is about 349.9132791949.

The spelling of 42843138 in words is "forty-two million, eight hundred forty-three thousand, one hundred thirty-eight".