42666814 has 16 divisors (see below), whose sum is σ = 66361680. Its totient is φ = 20559040.

The previous prime is 42666797. The next prime is 42666829. The reversal of 42666814 is 41866624.

42666814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3672 + ... + 9940.

It is an arithmetic number, because the mean of its divisors is an integer number (4147605).

Almost surely, 2^42666814 is an apocalyptic number.

42666814 is a deficient number, since it is larger than the sum of its proper divisors (23694866).

42666814 is a wasteful number, since it uses less digits than its factorization.

42666814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395.

The product of its digits is 55296, while the sum is 37.

The square root of 42666814 is about 6531.9839252711. The cubic root of 42666814 is about 349.4325881051.

The spelling of 42666814 in words is "forty-two million, six hundred sixty-six thousand, eight hundred fourteen".