422323143442 has 4 divisors (see below), whose sum is σ = 633484715166. Its totient is φ = 211161571720.

The previous prime is 422323143439. The next prime is 422323143461. The reversal of 422323143442 is 244341323224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 301663479121 + 120659664321 = 549239^2 + 347361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422323143398 and 422323143407.

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 as a sum of consecutive naturals, namely, 105580785859 + ... + 105580785862.

Almost surely, 2^422323143442 is an apocalyptic number.

422323143442 is a deficient number, since it is larger than the sum of its proper divisors (211161571724).

422323143442 is a wasteful number, since it uses less digits than its factorization.

422323143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211161571723.

The product of its digits is 110592, while the sum is 34.

Adding to 422323143442 its reverse (244341323224), we get a palindrome (666664466666).

The spelling of 422323143442 in words is "four hundred twenty-two billion, three hundred twenty-three million, one hundred forty-three thousand, four hundred forty-two".