422251321 has 8 divisors (see below), whose sum is σ = 448708680. Its totient is φ = 395973888.

The previous prime is 422251309. The next prime is 422251327. The reversal of 422251321 is 123152224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25644096 + 396607225 = 5064^2 + 19915^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 422251321 - 2¹¹ = 422249273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422251292 and 422251301.

It is not an unprimeable number, because it can be changed into a prime (422251327) 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, 40126 + ... + 49543.

It is an arithmetic number, because the mean of its divisors is an integer number (56088585).

Almost surely, 2^422251321 is an apocalyptic number.

It is an amenable number.

422251321 is a deficient number, since it is larger than the sum of its proper divisors (26457359).

422251321 is a wasteful number, since it uses less digits than its factorization.

422251321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89963.

The product of its digits is 960, while the sum is 22.

The square root of 422251321 is about 20548.7547311267. The cubic root of 422251321 is about 750.2229387615. Note that the first 3 decimals are identical.

The spelling of 422251321 in words is "four hundred twenty-two million, two hundred fifty-one thousand, three hundred twenty-one".