42643111 has 8 divisors (see below), whose sum is σ = 49654944. Its totient is φ = 35861280.

The previous prime is 42643099. The next prime is 42643141. The reversal of 42643111 is 11134624.

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

It is not a de Polignac number, because 42643111 - 2⁷ = 42642983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42643141) 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, 57100 + ... + 57841.

It is an arithmetic number, because the mean of its divisors is an integer number (6206868).

Almost surely, 2^42643111 is an apocalyptic number.

42643111 is a deficient number, since it is larger than the sum of its proper divisors (7011833).

42643111 is a wasteful number, since it uses less digits than its factorization.

42643111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115001.

The product of its digits is 576, while the sum is 22.

The square root of 42643111 is about 6530.1692933645. The cubic root of 42643111 is about 349.3678685248.

Adding to 42643111 its reverse (11134624), we get a palindrome (53777735).

The spelling of 42643111 in words is "forty-two million, six hundred forty-three thousand, one hundred eleven".