142716389 has 2 divisors, whose sum is σ = 142716390. Its totient is φ = 142716388.

The previous prime is 142716383. The next prime is 142716397. The reversal of 142716389 is 983617241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111724900 + 30991489 = 10570^2 + 5567^2 .

It is a cyclic number.

It is not a de Polignac number, because 142716389 - 2²⁴ = 125939173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142716383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71358194 + 71358195.

It is an arithmetic number, because the mean of its divisors is an integer number (71358195).

Almost surely, 2^142716389 is an apocalyptic number.

It is an amenable number.

142716389 is a deficient number, since it is larger than the sum of its proper divisors (1).

142716389 is an equidigital number, since it uses as much as digits as its factorization.

142716389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 142716389 is about 11946.3964859702. The cubic root of 142716389 is about 522.5862150263.

The spelling of 142716389 in words is "one hundred forty-two million, seven hundred sixteen thousand, three hundred eighty-nine".