40143605 has 8 divisors (see below), whose sum is σ = 49726464. Its totient is φ = 31078800.

The previous prime is 40143601. The next prime is 40143629. The reversal of 40143605 is 50634104.

It is a happy number.

40143605 is nontrivially palindromic in base 14.

40143605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40143605 - 2² = 40143601 is a prime.

It is a super-2 number, since 2×40143605² = 3223018044792050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143601) 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, 129341 + ... + 129650.

It is an arithmetic number, because the mean of its divisors is an integer number (6215808).

Almost surely, 2^40143605 is an apocalyptic number.

It is an amenable number.

40143605 is a deficient number, since it is larger than the sum of its proper divisors (9582859).

40143605 is a wasteful number, since it uses less digits than its factorization.

40143605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259027.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40143605 is about 6335.8981210244. The cubic root of 40143605 is about 342.4039690279.

Adding to 40143605 its reverse (50634104), we get a palindrome (90777709).

The spelling of 40143605 in words is "forty million, one hundred forty-three thousand, six hundred five".