422306421 has 8 divisors (see below), whose sum is σ = 575055744. Its totient is φ = 275547360.

The previous prime is 422306393. The next prime is 422306441. The reversal of 422306421 is 124603224.

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

It is not a de Polignac number, because 422306421 - 2⁵ = 422306389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422306391 and 422306400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422306441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1497400 + ... + 1497681.

It is an arithmetic number, because the mean of its divisors is an integer number (71881968).

Almost surely, 2^422306421 is an apocalyptic number.

It is an amenable number.

422306421 is a deficient number, since it is larger than the sum of its proper divisors (152749323).

422306421 is a wasteful number, since it uses less digits than its factorization.

422306421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995131.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 422306421 is about 20550.0954012384. The cubic root of 422306421 is about 750.2555697911.

Adding to 422306421 its reverse (124603224), we get a palindrome (546909645).

The spelling of 422306421 in words is "four hundred twenty-two million, three hundred six thousand, four hundred twenty-one".