42541166 has 4 divisors (see below), whose sum is σ = 63811752. Its totient is φ = 21270582.

The previous prime is 42541151. The next prime is 42541189. The reversal of 42541166 is 66114524.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10635290 + ... + 10635293.

It is an arithmetic number, because the mean of its divisors is an integer number (15952938).

Almost surely, 2^42541166 is an apocalyptic number.

42541166 is a deficient number, since it is larger than the sum of its proper divisors (21270586).

42541166 is a wasteful number, since it uses less digits than its factorization.

42541166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21270585.

The product of its digits is 5760, while the sum is 29.

The square root of 42541166 is about 6522.3589290992. The cubic root of 42541166 is about 349.0892402667.

The spelling of 42541166 in words is "forty-two million, five hundred forty-one thousand, one hundred sixty-six".