42041666 has 8 divisors (see below), whose sum is σ = 63204300. Its totient is φ = 20973568.

The previous prime is 42041653. The next prime is 42041669. The reversal of 42041666 is 66614024.

It can be written as a sum of positive squares in 2 ways, for example, as 40589641 + 1452025 = 6371^2 + 1205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42041669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22511 + ... + 24306.

Almost surely, 2^42041666 is an apocalyptic number.

42041666 is a deficient number, since it is larger than the sum of its proper divisors (21162634).

42041666 is a wasteful number, since it uses less digits than its factorization.

42041666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47268.

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

The square root of 42041666 is about 6483.9545032333. The cubic root of 42041666 is about 347.7175726308.

The spelling of 42041666 in words is "forty-two million, forty-one thousand, six hundred sixty-six".