422340143 has 4 divisors (see below), whose sum is σ = 423536928. Its totient is φ = 421143360.

The previous prime is 422340131. The next prime is 422340169. The reversal of 422340143 is 341043224.

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

It is a cyclic number.

It is not a de Polignac number, because 422340143 - 2⁸ = 422339887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422340103) 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, 597863 + ... + 598568.

It is an arithmetic number, because the mean of its divisors is an integer number (105884232).

Almost surely, 2^422340143 is an apocalyptic number.

422340143 is a deficient number, since it is larger than the sum of its proper divisors (1196785).

422340143 is a wasteful number, since it uses less digits than its factorization.

422340143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196784.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 422340143 is about 20550.9158676688. The cubic root of 422340143 is about 750.2755390549.

Adding to 422340143 its reverse (341043224), we get a palindrome (763383367).

The spelling of 422340143 in words is "four hundred twenty-two million, three hundred forty thousand, one hundred forty-three".