142399727 has 2 divisors, whose sum is σ = 142399728. Its totient is φ = 142399726.

The previous prime is 142399721. The next prime is 142399793. The reversal of 142399727 is 727993241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142399727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142399721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71199863 + 71199864.

It is an arithmetic number, because the mean of its divisors is an integer number (71199864).

Almost surely, 2^142399727 is an apocalyptic number.

142399727 is a deficient number, since it is larger than the sum of its proper divisors (1).

142399727 is an equidigital number, since it uses as much as digits as its factorization.

142399727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 142399727 is about 11933.1356734096. The cubic root of 142399727 is about 522.1994205342.

The spelling of 142399727 in words is "one hundred forty-two million, three hundred ninety-nine thousand, seven hundred twenty-seven".