422323242440 has 128 divisors (see below), whose sum is σ = 1047747571200. Its totient is φ = 151926727680.

The previous prime is 422323242421. The next prime is 422323242457. The reversal of 422323242440 is 44242323224.

It is a super-2 number, since 2×422323242440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 422323242397 and 422323242406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32462417 + ... + 32475423.

It is an arithmetic number, because the mean of its divisors is an integer number (8185527900).

Almost surely, 2^422323242440 is an apocalyptic number.

422323242440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422323242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523873785600).

422323242440 is an abundant number, since it is smaller than the sum of its proper divisors (625424328760).

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

422323242440 is a wasteful number, since it uses less digits than its factorization.

422323242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815 (or 13811 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 422323242440 its reverse (44242323224), we get a palindrome (466565565664).

The spelling of 422323242440 in words is "four hundred twenty-two billion, three hundred twenty-three million, two hundred forty-two thousand, four hundred forty".