42104666 has 4 divisors (see below), whose sum is σ = 63157002. Its totient is φ = 21052332.

The previous prime is 42104659. The next prime is 42104669. The reversal of 42104666 is 66640124.

42104666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23863225 + 18241441 = 4885^2 + 4271^2 .

It is not an unprimeable number, because it can be changed into a prime (42104669) 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 as a sum of consecutive naturals, namely, 10526165 + ... + 10526168.

Almost surely, 2^42104666 is an apocalyptic number.

42104666 is a deficient number, since it is larger than the sum of its proper divisors (21052336).

42104666 is a wasteful number, since it uses less digits than its factorization.

42104666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21052335.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42104666 is about 6488.8108309612. The cubic root of 42104666 is about 347.8911724268.

The spelling of 42104666 in words is "forty-two million, one hundred four thousand, six hundred sixty-six".