422544340 has 12 divisors (see below), whose sum is σ = 887343156. Its totient is φ = 169017728.

The previous prime is 422544323. The next prime is 422544347. The reversal of 422544340 is 43445224.

It can be written as a sum of positive squares in 2 ways, for example, as 174292804 + 248251536 = 13202^2 + 15756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422544299 and 422544308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422544347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10563589 + ... + 10563628.

It is an arithmetic number, because the mean of its divisors is an integer number (73945263).

Almost surely, 2^422544340 is an apocalyptic number.

It is an amenable number.

422544340 is an abundant number, since it is smaller than the sum of its proper divisors (464798816).

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

422544340 is a wasteful number, since it uses less digits than its factorization.

422544340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127226 (or 21127224 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 422544340 is about 20555.8833427318. The cubic root of 422544340 is about 750.3964363400.

Adding to 422544340 its reverse (43445224), we get a palindrome (465989564).

The spelling of 422544340 in words is "four hundred twenty-two million, five hundred forty-four thousand, three hundred forty".