41666642 has 8 divisors (see below), whose sum is σ = 62594316. Its totient is φ = 20801872.

The previous prime is 41666633. The next prime is 41666657. The reversal of 41666642 is 24666614.

41666642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41075281 + 591361 = 6409^2 + 769^2 .

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

It is a super-2 number, since 2×41666642² = 3472218111112328, which contains 22 as substring.

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, 14033 + ... + 16740.

Almost surely, 2^41666642 is an apocalyptic number.

41666642 is a deficient number, since it is larger than the sum of its proper divisors (20927674).

41666642 is a wasteful number, since it uses less digits than its factorization.

41666642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31452.

The product of its digits is 41472, while the sum is 35.

The square root of 41666642 is about 6454.9703330070. The cubic root of 41666642 is about 346.6805687637.

The spelling of 41666642 in words is "forty-one million, six hundred sixty-six thousand, six hundred forty-two".