142543417 has 2 divisors, whose sum is σ = 142543418. Its totient is φ = 142543416.

The previous prime is 142543399. The next prime is 142543441. The reversal of 142543417 is 714345241.

142543417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129140496 + 13402921 = 11364^2 + 3661^2 .

It is an emirp because it is prime and its reverse (714345241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142543417 - 2¹⁵ = 142510649 is a prime.

It is not a weakly prime, because it can be changed into another prime (142543217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71271708 + 71271709.

It is an arithmetic number, because the mean of its divisors is an integer number (71271709).

Almost surely, 2^142543417 is an apocalyptic number.

It is an amenable number.

142543417 is a deficient number, since it is larger than the sum of its proper divisors (1).

142543417 is an equidigital number, since it uses as much as digits as its factorization.

142543417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 142543417 is about 11939.1547858297. The cubic root of 142543417 is about 522.3750051654.

Adding to 142543417 its reverse (714345241), we get a palindrome (856888658).

It can be divided in two parts, 14254 and 3417, that added together give a palindrome (17671).

The spelling of 142543417 in words is "one hundred forty-two million, five hundred forty-three thousand, four hundred seventeen".