842963321 has 4 divisors (see below), whose sum is σ = 863523444. Its totient is φ = 822403200.

The previous prime is 842963299. The next prime is 842963369. The reversal of 842963321 is 123369248.

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 84732025 + 758231296 = 9205^2 + 27536^2 .

It is a cyclic number.

It is not a de Polignac number, because 842963321 - 2⁶ = 842963257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842963371) 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 in 3 ways as a sum of consecutive naturals, for example, 10280000 + ... + 10280081.

It is an arithmetic number, because the mean of its divisors is an integer number (215880861).

Almost surely, 2^842963321 is an apocalyptic number.

It is an amenable number.

842963321 is a deficient number, since it is larger than the sum of its proper divisors (20560123).

842963321 is a wasteful number, since it uses less digits than its factorization.

842963321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20560122.

The product of its digits is 62208, while the sum is 38.

The square root of 842963321 is about 29033.8306291127. The cubic root of 842963321 is about 944.6470210127.

The spelling of 842963321 in words is "eight hundred forty-two million, nine hundred sixty-three thousand, three hundred twenty-one".