422221340 has 24 divisors (see below), whose sum is σ = 896631120. Its totient is φ = 166990208.

The previous prime is 422221301. The next prime is 422221381. The reversal of 422221340 is 43122224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116822 + ... + 120381.

It is an arithmetic number, because the mean of its divisors is an integer number (37359630).

Almost surely, 2^422221340 is an apocalyptic number.

It is an amenable number.

422221340 is an abundant number, since it is smaller than the sum of its proper divisors (474409780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422221340 is a wasteful number, since it uses less digits than its factorization.

422221340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237301 (or 237299 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 422221340 is about 20548.0252092506. The cubic root of 422221340 is about 750.2051823803.

Adding to 422221340 its reverse (43122224), we get a palindrome (465343564).

The spelling of 422221340 in words is "four hundred twenty-two million, two hundred twenty-one thousand, three hundred forty".