40421105 has 4 divisors (see below), whose sum is σ = 48505332. Its totient is φ = 32336880.

The previous prime is 40421093. The next prime is 40421123. The reversal of 40421105 is 50112404.

40421105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4048144 + 36372961 = 2012^2 + 6031^2 .

It is not a de Polignac number, because 40421105 - 2⁴ = 40421089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 4042106 + ... + 4042115.

It is an arithmetic number, because the mean of its divisors is an integer number (12126333).

Almost surely, 2^40421105 is an apocalyptic number.

It is an amenable number.

40421105 is a deficient number, since it is larger than the sum of its proper divisors (8084227).

40421105 is an equidigital number, since it uses as much as digits as its factorization.

40421105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084226.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40421105 is about 6357.7594323787. The cubic root of 40421105 is about 343.1911346495.

Adding to 40421105 its reverse (50112404), we get a palindrome (90533509).

The spelling of 40421105 in words is "forty million, four hundred twenty-one thousand, one hundred five".