422326405 has 4 divisors (see below), whose sum is σ = 506791692. Its totient is φ = 337861120.

The previous prime is 422326381. The next prime is 422326409. The reversal of 422326405 is 504623224.

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 166358404 + 255968001 = 12898^2 + 15999^2 .

It is not a de Polignac number, because 422326405 - 2²⁵ = 388771973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422326409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42232636 + ... + 42232645.

It is an arithmetic number, because the mean of its divisors is an integer number (126697923).

Almost surely, 2^422326405 is an apocalyptic number.

It is an amenable number.

422326405 is a deficient number, since it is larger than the sum of its proper divisors (84465287).

422326405 is an equidigital number, since it uses as much as digits as its factorization.

422326405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84465286.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 422326405 is about 20550.5816219396. The cubic root of 422326405 is about 750.2674039081.

Adding to 422326405 its reverse (504623224), we get a palindrome (926949629).

It can be divided in two parts, 42232640 and 5, that added together give a triangular number (42232645 = T₉₁₉₀).

The spelling of 422326405 in words is "four hundred twenty-two million, three hundred twenty-six thousand, four hundred five".