421342202243143 has 2 divisors, whose sum is σ = 421342202243144. Its totient is φ = 421342202243142.

The previous prime is 421342202243113. The next prime is 421342202243167. The reversal of 421342202243143 is 341342202243124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421342202243143 - 2²⁵ = 421342168688711 is a prime.

It is a super-2 number, since 2×421342202243143² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421342202243113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210671101121571 + 210671101121572.

It is an arithmetic number, because the mean of its divisors is an integer number (210671101121572).

Almost surely, 2^{421342202243143} is an apocalyptic number.

421342202243143 is a deficient number, since it is larger than the sum of its proper divisors (1).

421342202243143 is an equidigital number, since it uses as much as digits as its factorization.

421342202243143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 421342202243143 its reverse (341342202243124), we get a palindrome (762684404486267).

The spelling of 421342202243143 in words is "four hundred twenty-one trillion, three hundred forty-two billion, two hundred two million, two hundred forty-three thousand, one hundred forty-three".