40422005 has 32 divisors (see below), whose sum is σ = 55901664. Its totient is φ = 27795456.

The previous prime is 40421999. The next prime is 40422007. The reversal of 40422005 is 50022404.

40422005 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 16 ways, for example, as 19864849 + 20557156 = 4457^2 + 4534^2 .

It is not a de Polignac number, because 40422005 - 2²² = 36227701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40422007) 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 31 ways as a sum of consecutive naturals, for example, 173369 + ... + 173601.

It is an arithmetic number, because the mean of its divisors is an integer number (1746927).

Almost surely, 2^40422005 is an apocalyptic number.

It is an amenable number.

40422005 is a deficient number, since it is larger than the sum of its proper divisors (15479659).

40422005 is a wasteful number, since it uses less digits than its factorization.

40422005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40422005 is about 6357.8302116367. The cubic root of 40422005 is about 343.1936817490.

Adding to 40422005 its reverse (50022404), we get a palindrome (90444409).

The spelling of 40422005 in words is "forty million, four hundred twenty-two thousand, five".