421143143 has 8 divisors (see below), whose sum is σ = 423635712. Its totient is φ = 418658616.

The previous prime is 421143131. The next prime is 421143157. The reversal of 421143143 is 341341124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421143143 - 2⁴ = 421143127 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 (421143043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125696 + ... + 129002.

It is an arithmetic number, because the mean of its divisors is an integer number (52954464).

Almost surely, 2^421143143 is an apocalyptic number.

421143143 is a deficient number, since it is larger than the sum of its proper divisors (2492569).

421143143 is a wasteful number, since it uses less digits than its factorization.

421143143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its digits is 1152, while the sum is 23.

The square root of 421143143 is about 20521.7724137074. The cubic root of 421143143 is about 749.5660559348.

Adding to 421143143 its reverse (341341124), we get a palindrome (762484267).

The spelling of 421143143 in words is "four hundred twenty-one million, one hundred forty-three thousand, one hundred forty-three".