422322401000 has 128 divisors (see below), whose sum is σ = 1012582771200. Its totient is φ = 164790547200.

The previous prime is 422322400987. The next prime is 422322401003. The reversal of 422322401000 is 104223224.

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

It is not an unprimeable number, because it can be changed into a prime (422322401003) by changing a digit.

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, 14414366 + ... + 14443634.

It is an arithmetic number, because the mean of its divisors is an integer number (7910802900).

Almost surely, 2^422322401000 is an apocalyptic number.

422322401000 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 422322401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506291385600).

422322401000 is an abundant number, since it is smaller than the sum of its proper divisors (590260370200).

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

422322401000 is a wasteful number, since it uses less digits than its factorization.

422322401000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29644 (or 29630 counting only the distinct ones).

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

Adding to 422322401000 its reverse (104223224), we get a palindrome (422426624224).

The spelling of 422322401000 in words is "four hundred twenty-two billion, three hundred twenty-two million, four hundred one thousand".