421210142322143 has 4 divisors (see below), whose sum is σ = 428115226622568. Its totient is φ = 414305058021720.

The previous prime is 421210142322131. The next prime is 421210142322173. The reversal of 421210142322143 is 341223241012124.

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 421210142322143 - 2⁴ = 421210142322127 is a prime.

It is a super-2 number, since 2×421210142322143² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421210142322103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3452542150121 + ... + 3452542150242.

It is an arithmetic number, because the mean of its divisors is an integer number (107028806655642).

Almost surely, 2^{421210142322143} is an apocalyptic number.

421210142322143 is a deficient number, since it is larger than the sum of its proper divisors (6905084300425).

421210142322143 is an equidigital number, since it uses as much as digits as its factorization.

421210142322143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6905084300424.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 421210142322143 its reverse (341223241012124), we get a palindrome (762433383334267).

The spelling of 421210142322143 in words is "four hundred twenty-one trillion, two hundred ten billion, one hundred forty-two million, three hundred twenty-two thousand, one hundred forty-three".