421324143 has 32 divisors (see below), whose sum is σ = 609945600. Its totient is φ = 257976576.

The previous prime is 421324117. The next prime is 421324147. The reversal of 421324143 is 341423124.

It is not a de Polignac number, because 421324143 - 2⁸ = 421323887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421324147) 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 31 ways as a sum of consecutive naturals, for example, 200643 + ... + 202731.

It is an arithmetic number, because the mean of its divisors is an integer number (19060800).

Almost surely, 2^421324143 is an apocalyptic number.

421324143 is a deficient number, since it is larger than the sum of its proper divisors (188621457).

421324143 is a wasteful number, since it uses less digits than its factorization.

421324143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its digits is 2304, while the sum is 24.

The square root of 421324143 is about 20526.1818904540. The cubic root of 421324143 is about 749.6734240404.

Adding to 421324143 its reverse (341423124), we get a palindrome (762747267).

The spelling of 421324143 in words is "four hundred twenty-one million, three hundred twenty-four thousand, one hundred forty-three".