421145423143 has 2 divisors, whose sum is σ = 421145423144. Its totient is φ = 421145423142.

The previous prime is 421145423131. The next prime is 421145423221. The reversal of 421145423143 is 341324541124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421145423143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421145423099 and 421145423108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421145423113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210572711571 + 210572711572.

It is an arithmetic number, because the mean of its divisors is an integer number (210572711572).

Almost surely, 2^421145423143 is an apocalyptic number.

421145423143 is a deficient number, since it is larger than the sum of its proper divisors (1).

421145423143 is an equidigital number, since it uses as much as digits as its factorization.

421145423143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 34.

Adding to 421145423143 its reverse (341324541124), we get a palindrome (762469964267).

The spelling of 421145423143 in words is "four hundred twenty-one billion, one hundred forty-five million, four hundred twenty-three thousand, one hundred forty-three".