142433321 has 2 divisors, whose sum is σ = 142433322. Its totient is φ = 142433320.

The previous prime is 142433309. The next prime is 142433341. The reversal of 142433321 is 123334241.

142433321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 346921 = 11920^2 + 589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142433321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142433341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71216660 + 71216661.

It is an arithmetic number, because the mean of its divisors is an integer number (71216661).

Almost surely, 2^142433321 is an apocalyptic number.

It is an amenable number.

142433321 is a deficient number, since it is larger than the sum of its proper divisors (1).

142433321 is an equidigital number, since it uses as much as digits as its factorization.

142433321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 142433321 is about 11934.5431835492. The cubic root of 142433321 is about 522.2404819144.

Adding to 142433321 its reverse (123334241), we get a palindrome (265767562).

The spelling of 142433321 in words is "one hundred forty-two million, four hundred thirty-three thousand, three hundred twenty-one".