512421143 has 4 divisors (see below), whose sum is σ = 551838168. Its totient is φ = 473004120.

The previous prime is 512421131. The next prime is 512421179. The reversal of 512421143 is 341124215.

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 512421143 - 2⁶ = 512421079 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 (512421193) 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 3 ways as a sum of consecutive naturals, for example, 19708493 + ... + 19708518.

It is an arithmetic number, because the mean of its divisors is an integer number (137959542).

Almost surely, 2^512421143 is an apocalyptic number.

512421143 is a deficient number, since it is larger than the sum of its proper divisors (39417025).

512421143 is a wasteful number, since it uses less digits than its factorization.

512421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39417024.

The product of its digits is 960, while the sum is 23.

The square root of 512421143 is about 22636.7211185719. The cubic root of 512421143 is about 800.2192851995.

Adding to 512421143 its reverse (341124215), we get a palindrome (853545358).

The spelling of 512421143 in words is "five hundred twelve million, four hundred twenty-one thousand, one hundred forty-three".