42811838 has 8 divisors (see below), whose sum is σ = 65030880. Its totient is φ = 21134880.

The previous prime is 42811829. The next prime is 42811841. The reversal of 42811838 is 83811824.

42811838 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 a junction number, because it is equal to n+sod(n) for n = 42811798 and 42811807.

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 in 3 ways as a sum of consecutive naturals, for example, 135323 + ... + 135638.

It is an arithmetic number, because the mean of its divisors is an integer number (8128860).

Almost surely, 2^42811838 is an apocalyptic number.

42811838 is a deficient number, since it is larger than the sum of its proper divisors (22219042).

42811838 is a wasteful number, since it uses less digits than its factorization.

42811838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271042.

The product of its digits is 12288, while the sum is 35.

The square root of 42811838 is about 6543.0755765160. The cubic root of 42811838 is about 349.8280461457.

The spelling of 42811838 in words is "forty-two million, eight hundred eleven thousand, eight hundred thirty-eight".