42666011 has 4 divisors (see below), whose sum is σ = 42759024. Its totient is φ = 42573000.

The previous prime is 42665957. The next prime is 42666053. The reversal of 42666011 is 11066624.

It is a happy number.

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 42666011 - 2⁶ = 42665947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42666061) 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, 45815 + ... + 46736.

It is an arithmetic number, because the mean of its divisors is an integer number (10689756).

Almost surely, 2^42666011 is an apocalyptic number.

42666011 is a deficient number, since it is larger than the sum of its proper divisors (93013).

42666011 is an equidigital number, since it uses as much as digits as its factorization.

42666011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93012.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 42666011 is about 6531.9224582048. The cubic root of 42666011 is about 349.4303959554.

The spelling of 42666011 in words is "forty-two million, six hundred sixty-six thousand, eleven".