42261111 has 12 divisors (see below), whose sum is σ = 64256920. Its totient is φ = 26691120.

The previous prime is 42261101. The next prime is 42261137. The reversal of 42261111 is 11116224.

42261111 is a `hidden beast` number, since 42 + 2 + 611 + 11 = 666.

It is not a de Polignac number, because 42261111 - 2⁹ = 42260599 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 (42261101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123400 + ... + 123741.

Almost surely, 2^42261111 is an apocalyptic number.

42261111 is a deficient number, since it is larger than the sum of its proper divisors (21995809).

42261111 is a wasteful number, since it uses less digits than its factorization.

42261111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247166 (or 247163 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 42261111 is about 6500.8546361229. The cubic root of 42261111 is about 348.3215171672.

Adding to 42261111 its reverse (11116224), we get a palindrome (53377335).

The spelling of 42261111 in words is "forty-two million, two hundred sixty-one thousand, one hundred eleven".