142817863 has 2 divisors, whose sum is σ = 142817864. Its totient is φ = 142817862.

The previous prime is 142817861. The next prime is 142817893. The reversal of 142817863 is 368718241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142817863 - 2¹ = 142817861 is a prime.

Together with 142817861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142817861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71408931 + 71408932.

It is an arithmetic number, because the mean of its divisors is an integer number (71408932).

Almost surely, 2^142817863 is an apocalyptic number.

142817863 is a deficient number, since it is larger than the sum of its proper divisors (1).

142817863 is an equidigital number, since it uses as much as digits as its factorization.

142817863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 142817863 is about 11950.6427860597. The cubic root of 142817863 is about 522.7100418476.

It can be divided in two parts, 1428178 and 63, that added together give a palindrome (1428241).

The spelling of 142817863 in words is "one hundred forty-two million, eight hundred seventeen thousand, eight hundred sixty-three".