142817924407889 has 4 divisors (see below), whose sum is σ = 143908137571440. Its totient is φ = 141727711244340.

The previous prime is 142817924407871. The next prime is 142817924407891. The reversal of 142817924407889 is 988704429718241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142817924407889 - 2²⁰ = 142817923359313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142817924407489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545106581579 + ... + 545106581840.

It is an arithmetic number, because the mean of its divisors is an integer number (35977034392860).

Almost surely, 2^{142817924407889} is an apocalyptic number.

It is an amenable number.

142817924407889 is a deficient number, since it is larger than the sum of its proper divisors (1090213163551).

142817924407889 is a wasteful number, since it uses less digits than its factorization.

142817924407889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090213163550.

The product of its (nonzero) digits is 520224768, while the sum is 74.

The spelling of 142817924407889 in words is "one hundred forty-two trillion, eight hundred seventeen billion, nine hundred twenty-four million, four hundred seven thousand, eight hundred eighty-nine".