40412138 has 16 divisors (see below), whose sum is σ = 67533480. Its totient is φ = 18008256.

The previous prime is 40412137. The next prime is 40412147. The reversal of 40412138 is 83121404.

40412138 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 4 ways, for example, as 36156169 + 4255969 = 6013^2 + 2063^2 .

It is not an unprimeable number, because it can be changed into a prime (40412137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26045 + ... + 27552.

Almost surely, 2^40412138 is an apocalyptic number.

40412138 is a deficient number, since it is larger than the sum of its proper divisors (27121342).

40412138 is a wasteful number, since it uses less digits than its factorization.

40412138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53641.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40412138 is about 6357.0541919981. The cubic root of 40412138 is about 343.1657549829.

The spelling of 40412138 in words is "forty million, four hundred twelve thousand, one hundred thirty-eight".