423534143 has 4 divisors (see below), whose sum is σ = 428637048. Its totient is φ = 418431240.

The previous prime is 423534113. The next prime is 423534151. The reversal of 423534143 is 341435324.

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 423534143 - 2¹⁰ = 423533119 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 (423534113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551328 + ... + 2551493.

It is an arithmetic number, because the mean of its divisors is an integer number (107159262).

Almost surely, 2^423534143 is an apocalyptic number.

423534143 is a deficient number, since it is larger than the sum of its proper divisors (5102905).

423534143 is an equidigital number, since it uses as much as digits as its factorization.

423534143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102904.

The product of its digits is 17280, while the sum is 29.

The square root of 423534143 is about 20579.9451651359. The cubic root of 423534143 is about 750.9819097618.

Adding to 423534143 its reverse (341435324), we get a palindrome (764969467).

The spelling of 423534143 in words is "four hundred twenty-three million, five hundred thirty-four thousand, one hundred forty-three".