40040144 has 20 divisors (see below), whose sum is σ = 81661440. Its totient is φ = 18966240.

The previous prime is 40040141. The next prime is 40040153. The reversal of 40040144 is 44104004.

40040144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040141) 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 3 ways as a sum of consecutive naturals, for example, 65552 + ... + 66159.

It is an arithmetic number, because the mean of its divisors is an integer number (4083072).

Almost surely, 2^40040144 is an apocalyptic number.

It is an amenable number.

40040144 is an abundant number, since it is smaller than the sum of its proper divisors (41621296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040144 is a wasteful number, since it uses less digits than its factorization.

40040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131738 (or 131732 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40040144 is about 6327.7281863241. The cubic root of 40040144 is about 342.1095598738.

Adding to 40040144 its reverse (44104004), we get a palindrome (84144148).

The spelling of 40040144 in words is "forty million, forty thousand, one hundred forty-four".