42666111 has 6 divisors (see below), whose sum is σ = 61628840. Its totient is φ = 28444068.

The previous prime is 42666103. The next prime is 42666121. The reversal of 42666111 is 11166624.

42666111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42666111 - 2³ = 42666103 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 (42666121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2370331 + ... + 2370348.

Almost surely, 2^42666111 is an apocalyptic number.

42666111 is a deficient number, since it is larger than the sum of its proper divisors (18962729).

42666111 is a wasteful number, since it uses less digits than its factorization.

42666111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740685 (or 4740682 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 42666111 is about 6531.9301129146. The cubic root of 42666111 is about 349.4306689519.

The spelling of 42666111 in words is "forty-two million, six hundred sixty-six thousand, one hundred eleven".