143421421433 has 4 divisors (see below), whose sum is σ = 143422425588. Its totient is φ = 143420417280.

The previous prime is 143421421427. The next prime is 143421421457. The reversal of 143421421433 is 334124124341.

143421421433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 105463861504 + 37957559929 = 324752^2 + 194827^2 .

It is a cyclic number.

It is not a de Polignac number, because 143421421433 - 2⁶ = 143421421369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143421421433.

It is not an unprimeable number, because it can be changed into a prime (143421420433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243416 + ... + 588297.

It is an arithmetic number, because the mean of its divisors is an integer number (35855606397).

Almost surely, 2^143421421433 is an apocalyptic number.

It is an amenable number.

143421421433 is a deficient number, since it is larger than the sum of its proper divisors (1004155).

143421421433 is an equidigital number, since it uses as much as digits as its factorization.

143421421433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004154.

The product of its digits is 27648, while the sum is 32.

Adding to 143421421433 its reverse (334124124341), we get a palindrome (477545545774).

The spelling of 143421421433 in words is "one hundred forty-three billion, four hundred twenty-one million, four hundred twenty-one thousand, four hundred thirty-three".