142795309 has 2 divisors, whose sum is σ = 142795310. Its totient is φ = 142795308.

The previous prime is 142795277. The next prime is 142795313. The reversal of 142795309 is 903597241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89359209 + 53436100 = 9453^2 + 7310^2 .

It is a cyclic number.

It is not a de Polignac number, because 142795309 - 2⁵ = 142795277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142795319) 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, 71397654 + 71397655.

It is an arithmetic number, because the mean of its divisors is an integer number (71397655).

Almost surely, 2^142795309 is an apocalyptic number.

It is an amenable number.

142795309 is a deficient number, since it is larger than the sum of its proper divisors (1).

142795309 is an equidigital number, since it uses as much as digits as its factorization.

142795309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 142795309 is about 11949.6991175510. The cubic root of 142795309 is about 522.6825246946.

The spelling of 142795309 in words is "one hundred forty-two million, seven hundred ninety-five thousand, three hundred nine".