42666705 has 12 divisors (see below), whose sum is σ = 73955700. Its totient is φ = 22755552.

The previous prime is 42666697. The next prime is 42666713. The reversal of 42666705 is 50766624.

It is an interprime number because it is at equal distance from previous prime (42666697) and next prime (42666713).

It can be written as a sum of positive squares in 2 ways, for example, as 4511376 + 38155329 = 2124^2 + 6177^2 .

It is not a de Polignac number, because 42666705 - 2³ = 42666697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42666705.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 474030 + ... + 474119.

It is an arithmetic number, because the mean of its divisors is an integer number (6162975).

Almost surely, 2^42666705 is an apocalyptic number.

42666705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42666705 is a deficient number, since it is larger than the sum of its proper divisors (31288995).

42666705 is a wasteful number, since it uses less digits than its factorization.

42666705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948160 (or 948157 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 42666705 is about 6531.9755817057. The cubic root of 42666705 is about 349.4322905421.

The spelling of 42666705 in words is "forty-two million, six hundred sixty-six thousand, seven hundred five".