422140321 has 4 divisors (see below), whose sum is σ = 440494272. Its totient is φ = 403786372.

The previous prime is 422140273. The next prime is 422140343. The reversal of 422140321 is 123041224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422140321 - 2¹¹ = 422138273 is a prime.

It is a super-2 number, since 2×422140321² = 356404901227966082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422140351) 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 3 ways as a sum of consecutive naturals, for example, 9176941 + ... + 9176986.

It is an arithmetic number, because the mean of its divisors is an integer number (110123568).

Almost surely, 2^422140321 is an apocalyptic number.

It is an amenable number.

422140321 is a deficient number, since it is larger than the sum of its proper divisors (18353951).

422140321 is a wasteful number, since it uses less digits than its factorization.

422140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18353950.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 422140321 is about 20546.0536600097. The cubic root of 422140321 is about 750.1571943102.

Adding to 422140321 its reverse (123041224), we get a palindrome (545181545).

The spelling of 422140321 in words is "four hundred twenty-two million, one hundred forty thousand, three hundred twenty-one".