42271111 has 4 divisors (see below), whose sum is σ = 42421824. Its totient is φ = 42120400.

The previous prime is 42271069. The next prime is 42271121. The reversal of 42271111 is 11117224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42271111 - 2¹¹ = 42269063 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 (42271121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74935 + ... + 75496.

It is an arithmetic number, because the mean of its divisors is an integer number (10605456).

Almost surely, 2^42271111 is an apocalyptic number.

42271111 is a deficient number, since it is larger than the sum of its proper divisors (150713).

42271111 is a wasteful number, since it uses less digits than its factorization.

42271111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150712.

The product of its digits is 112, while the sum is 19.

The square root of 42271111 is about 6501.6237202717. The cubic root of 42271111 is about 348.3489887629.

Adding to 42271111 its reverse (11117224), we get a palindrome (53388335).

The spelling of 42271111 in words is "forty-two million, two hundred seventy-one thousand, one hundred eleven".