422323143444 has 72 divisors (see below), whose sum is σ = 1104279656480. Its totient is φ = 135984215232.

The previous prime is 422323143439. The next prime is 422323143461. The reversal of 422323143444 is 444341323224.

422323143444 is a `hidden beast` number, since 42 + 2 + 32 + 3 + 143 + 444 = 666.

It is a super-2 number, since 2×422323143444² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 422323143399 and 422323143408.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 955354 + ... + 1325649.

Almost surely, 2^422323143444 is an apocalyptic number.

It is an amenable number.

422323143444 is an abundant number, since it is smaller than the sum of its proper divisors (681956513036).

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

422323143444 is a wasteful number, since it uses less digits than its factorization.

422323143444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281189 (or 2281184 counting only the distinct ones).

The product of its digits is 221184, while the sum is 36.

Adding to 422323143444 its reverse (444341323224), we get a palindrome (866664466668).

The spelling of 422323143444 in words is "four hundred twenty-two billion, three hundred twenty-three million, one hundred forty-three thousand, four hundred forty-four".