143242234321 has 4 divisors (see below), whose sum is σ = 143751993444. Its totient is φ = 142732475200.

The previous prime is 143242234309. The next prime is 143242234327. The reversal of 143242234321 is 123432242341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40576462096 + 102665772225 = 201436^2 + 320415^2 .

It is a cyclic number.

It is not a de Polignac number, because 143242234321 - 2¹⁹ = 143241710033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143242234327) 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, 254879140 + ... + 254879701.

It is an arithmetic number, because the mean of its divisors is an integer number (35937998361).

Almost surely, 2^143242234321 is an apocalyptic number.

It is an amenable number.

143242234321 is a deficient number, since it is larger than the sum of its proper divisors (509759123).

143242234321 is an equidigital number, since it uses as much as digits as its factorization.

143242234321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509759122.

The product of its digits is 27648, while the sum is 31.

Adding to 143242234321 its reverse (123432242341), we get a palindrome (266674476662).

The spelling of 143242234321 in words is "one hundred forty-three billion, two hundred forty-two million, two hundred thirty-four thousand, three hundred twenty-one".