421513421143 has 4 divisors (see below), whose sum is σ = 431316058888. Its totient is φ = 411710783400.

The previous prime is 421513421113. The next prime is 421513421221. The reversal of 421513421143 is 341124315124.

It is a happy number.

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 421513421143 - 2⁵ = 421513421111 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 (421513421113) 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, 4901318808 + ... + 4901318893.

It is an arithmetic number, because the mean of its divisors is an integer number (107829014722).

Almost surely, 2^421513421143 is an apocalyptic number.

421513421143 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

421513421143 is a deficient number, since it is larger than the sum of its proper divisors (9802637745).

421513421143 is an equidigital number, since it uses as much as digits as its factorization.

421513421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9802637744.

The product of its digits is 11520, while the sum is 31.

Adding to 421513421143 its reverse (341124315124), we get a palindrome (762637736267).

The spelling of 421513421143 in words is "four hundred twenty-one billion, five hundred thirteen million, four hundred twenty-one thousand, one hundred forty-three".