42205111 has 4 divisors (see below), whose sum is σ = 45451672. Its totient is φ = 38958552.

The previous prime is 42205103. The next prime is 42205129. The reversal of 42205111 is 11150224.

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 42205111 - 2³ = 42205103 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 (42205151) 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, 1623261 + ... + 1623286.

It is an arithmetic number, because the mean of its divisors is an integer number (11362918).

Almost surely, 2^42205111 is an apocalyptic number.

42205111 is a deficient number, since it is larger than the sum of its proper divisors (3246561).

42205111 is a wasteful number, since it uses less digits than its factorization.

42205111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246560.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 42205111 is about 6496.5460823425. The cubic root of 42205111 is about 348.1675960908.

Adding to 42205111 its reverse (11150224), we get a palindrome (53355335).

The spelling of 42205111 in words is "forty-two million, two hundred five thousand, one hundred eleven".