142400317 has 2 divisors, whose sum is σ = 142400318. Its totient is φ = 142400316.

The previous prime is 142400299. The next prime is 142400333. The reversal of 142400317 is 713004241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110376036 + 32024281 = 10506^2 + 5659^2 .

It is a cyclic number.

It is not a de Polignac number, because 142400317 - 2⁷ = 142400189 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 (142400417) 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, 71200158 + 71200159.

It is an arithmetic number, because the mean of its divisors is an integer number (71200159).

Almost surely, 2^142400317 is an apocalyptic number.

It is an amenable number.

142400317 is a deficient number, since it is larger than the sum of its proper divisors (1).

142400317 is an equidigital number, since it uses as much as digits as its factorization.

142400317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 142400317 is about 11933.1603944638. The cubic root of 142400317 is about 522.2001417370.

Adding to 142400317 its reverse (713004241), we get a palindrome (855404558).

The spelling of 142400317 in words is "one hundred forty-two million, four hundred thousand, three hundred seventeen".