142887443 has 2 divisors, whose sum is σ = 142887444. Its totient is φ = 142887442.

The previous prime is 142887389. The next prime is 142887457. The reversal of 142887443 is 344788241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142887443 - 2⁸ = 142887187 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142887443.

It is not a weakly prime, because it can be changed into another prime (142883443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71443721 + 71443722.

It is an arithmetic number, because the mean of its divisors is an integer number (71443722).

Almost surely, 2^142887443 is an apocalyptic number.

142887443 is a deficient number, since it is larger than the sum of its proper divisors (1).

142887443 is an equidigital number, since it uses as much as digits as its factorization.

142887443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 41.

The square root of 142887443 is about 11953.5535720555. The cubic root of 142887443 is about 522.7949151239.

The spelling of 142887443 in words is "one hundred forty-two million, eight hundred eighty-seven thousand, four hundred forty-three".