42181006 has 32 divisors (see below), whose sum is σ = 74059200. Its totient is φ = 17646336.

The previous prime is 42181001. The next prime is 42181019. The reversal of 42181006 is 60018124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42181001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 152140 + ... + 152416.

It is an arithmetic number, because the mean of its divisors is an integer number (2314350).

Almost surely, 2^42181006 is an apocalyptic number.

42181006 is a deficient number, since it is larger than the sum of its proper divisors (31878194).

42181006 is a wasteful number, since it uses less digits than its factorization.

42181006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 42181006 is about 6494.6906007908. The cubic root of 42181006 is about 348.1012993952.

The spelling of 42181006 in words is "forty-two million, one hundred eighty-one thousand, six".