42011843 has 8 divisors (see below), whose sum is σ = 43095360. Its totient is φ = 40936320.

The previous prime is 42011821. The next prime is 42011857. The reversal of 42011843 is 34811024.

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

It is a cyclic number.

It is not a de Polignac number, because 42011843 - 2⁶ = 42011779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42011803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9473 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (5386920).

Almost surely, 2^42011843 is an apocalyptic number.

42011843 is a deficient number, since it is larger than the sum of its proper divisors (1083517).

42011843 is a wasteful number, since it uses less digits than its factorization.

42011843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 42011843 is about 6481.6543412928. The cubic root of 42011843 is about 347.6353333099.

Adding to 42011843 its reverse (34811024), we get a palindrome (76822867).

The spelling of 42011843 in words is "forty-two million, eleven thousand, eight hundred forty-three".