42666211 has 6 divisors (see below), whose sum is σ = 49632180. Its totient is φ = 36570996.

The previous prime is 42666193. The next prime is 42666223. The reversal of 42666211 is 11266624.

It is not a de Polignac number, because 42666211 - 2¹³ = 42658019 is a prime.

It is a super-2 number, since 2×42666211² = 3640811122193042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42666211.

It is not an unprimeable number, because it can be changed into a prime (42663211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 435321 + ... + 435418.

It is an arithmetic number, because the mean of its divisors is an integer number (8272030).

Almost surely, 2^42666211 is an apocalyptic number.

42666211 is a deficient number, since it is larger than the sum of its proper divisors (6965969).

42666211 is an equidigital number, since it uses as much as digits as its factorization.

42666211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870753 (or 870746 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 42666211 is about 6531.9377676154. The cubic root of 42666211 is about 349.4309419479.

The spelling of 42666211 in words is "forty-two million, six hundred sixty-six thousand, two hundred eleven".