42666485 has 4 divisors (see below), whose sum is σ = 51199788. Its totient is φ = 34133184.

The previous prime is 42666479. The next prime is 42666493. The reversal of 42666485 is 58466624.

42666485 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 2 ways, for example, as 22676644 + 19989841 = 4762^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 42666485 - 2⁴ = 42666469 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 4266644 + ... + 4266653.

It is an arithmetic number, because the mean of its divisors is an integer number (12799947).

Almost surely, 2^42666485 is an apocalyptic number.

It is an amenable number.

42666485 is a deficient number, since it is larger than the sum of its proper divisors (8533303).

42666485 is an equidigital number, since it uses as much as digits as its factorization.

42666485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533302.

The product of its digits is 276480, while the sum is 41.

The square root of 42666485 is about 6531.9587414496. The cubic root of 42666485 is about 349.4316899549.

The spelling of 42666485 in words is "forty-two million, six hundred sixty-six thousand, four hundred eighty-five".