142968893 has 2 divisors, whose sum is σ = 142968894. Its totient is φ = 142968892.

The previous prime is 142968871. The next prime is 142968899. The reversal of 142968893 is 398869241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104305369 + 38663524 = 10213^2 + 6218^2 .

It is an emirp because it is prime and its reverse (398869241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142968893 - 2⁶ = 142968829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142968899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71484446 + 71484447.

It is an arithmetic number, because the mean of its divisors is an integer number (71484447).

Almost surely, 2^142968893 is an apocalyptic number.

It is an amenable number.

142968893 is a deficient number, since it is larger than the sum of its proper divisors (1).

142968893 is an equidigital number, since it uses as much as digits as its factorization.

142968893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 142968893 is about 11956.9600233504. The cubic root of 142968893 is about 522.8942323594.

The spelling of 142968893 in words is "one hundred forty-two million, nine hundred sixty-eight thousand, eight hundred ninety-three".