142799257 has 2 divisors, whose sum is σ = 142799258. Its totient is φ = 142799256.

The previous prime is 142799233. The next prime is 142799281. The reversal of 142799257 is 752997241.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (142799233) and next prime (142799281).

It can be written as a sum of positive squares in only one way, i.e., 141991056 + 808201 = 11916^2 + 899^2 .

It is an emirp because it is prime and its reverse (752997241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142799257 is a prime.

It is not a weakly prime, because it can be changed into another prime (142799227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71399628 + 71399629.

It is an arithmetic number, because the mean of its divisors is an integer number (71399629).

Almost surely, 2^142799257 is an apocalyptic number.

It is an amenable number.

142799257 is a deficient number, since it is larger than the sum of its proper divisors (1).

142799257 is an equidigital number, since it uses as much as digits as its factorization.

142799257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 142799257 is about 11949.8643088531. The cubic root of 142799257 is about 522.6873416866.

The spelling of 142799257 in words is "one hundred forty-two million, seven hundred ninety-nine thousand, two hundred fifty-seven".