142243433 has 2 divisors, whose sum is σ = 142243434. Its totient is φ = 142243432.

The previous prime is 142243427. The next prime is 142243483. The reversal of 142243433 is 334342241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105616729 + 36626704 = 10277^2 + 6052^2 .

It is an emirp because it is prime and its reverse (334342241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142243433 - 2¹⁸ = 141981289 is a prime.

It is not a weakly prime, because it can be changed into another prime (142243483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121716 + 71121717.

It is an arithmetic number, because the mean of its divisors is an integer number (71121717).

Almost surely, 2^142243433 is an apocalyptic number.

It is an amenable number.

142243433 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243433 is an equidigital number, since it uses as much as digits as its factorization.

142243433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 26.

The square root of 142243433 is about 11926.5851357377. The cubic root of 142243433 is about 522.0083000496.

Adding to 142243433 its reverse (334342241), we get a palindrome (476585674).

The spelling of 142243433 in words is "one hundred forty-two million, two hundred forty-three thousand, four hundred thirty-three".