142730771 has 2 divisors, whose sum is σ = 142730772. Its totient is φ = 142730770.

The previous prime is 142730761. The next prime is 142730807. The reversal of 142730771 is 177037241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142730771 - 2¹⁰ = 142729747 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142730711) 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, 71365385 + 71365386.

It is an arithmetic number, because the mean of its divisors is an integer number (71365386).

Almost surely, 2^142730771 is an apocalyptic number.

142730771 is a deficient number, since it is larger than the sum of its proper divisors (1).

142730771 is an equidigital number, since it uses as much as digits as its factorization.

142730771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 142730771 is about 11946.9984096425. The cubic root of 142730771 is about 522.6037686807.

The spelling of 142730771 in words is "one hundred forty-two million, seven hundred thirty thousand, seven hundred seventy-one".