842703620905 has 4 divisors (see below), whose sum is σ = 1011244345092. Its totient is φ = 674162896720.

The previous prime is 842703620897. The next prime is 842703620911. The reversal of 842703620905 is 509026307248.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363612618009 + 479091002896 = 603003^2 + 692164^2 .

It is not a de Polignac number, because 842703620905 - 2³ = 842703620897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 84270362086 + ... + 84270362095.

It is an arithmetic number, because the mean of its divisors is an integer number (252811086273).

Almost surely, 2^842703620905 is an apocalyptic number.

It is an amenable number.

842703620905 is a deficient number, since it is larger than the sum of its proper divisors (168540724187).

842703620905 is a wasteful number, since it uses less digits than its factorization.

842703620905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168540724186.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 842703620905 in words is "eight hundred forty-two billion, seven hundred three million, six hundred twenty thousand, nine hundred five".