422313421 has 4 divisors (see below), whose sum is σ = 426494844. Its totient is φ = 418132000.

The previous prime is 422313413. The next prime is 422313433. The reversal of 422313421 is 124313224.

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 179265321 + 243048100 = 13389^2 + 15590^2 .

It is a cyclic number.

It is not a de Polignac number, because 422313421 - 2³ = 422313413 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422313392 and 422313401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422313401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090560 + ... + 2090761.

It is an arithmetic number, because the mean of its divisors is an integer number (106623711).

Almost surely, 2^422313421 is an apocalyptic number.

It is an amenable number.

422313421 is a deficient number, since it is larger than the sum of its proper divisors (4181423).

422313421 is a wasteful number, since it uses less digits than its factorization.

422313421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181422.

The product of its digits is 1152, while the sum is 22.

The square root of 422313421 is about 20550.2657160437. The cubic root of 422313421 is about 750.2597150908.

Adding to 422313421 its reverse (124313224), we get a palindrome (546626645).

The spelling of 422313421 in words is "four hundred twenty-two million, three hundred thirteen thousand, four hundred twenty-one".