842213669284 has 81 divisors (see below), whose sum is σ = 1632823474401. Its totient is φ = 379936908000.

The previous prime is 842213669281. The next prime is 842213669287. The reversal of 842213669284 is 482966312248.

The square root of 842213669284 is 917722.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (842213669281) and next prime (842213669287).

It can be written as a sum of positive squares in only one way, i.e., 124587820900 + 717625848384 = 352970^2 + 847128^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842213669281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1121455909 + ... + 1121456659.

Almost surely, 2^842213669284 is an apocalyptic number.

842213669284 is the 917722-nd square number.

It is an amenable number.

842213669284 is a deficient number, since it is larger than the sum of its proper divisors (790609805117).

842213669284 is an equidigital number, since it uses as much as digits as its factorization.

842213669284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 813 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 55.

The spelling of 842213669284 in words is "eight hundred forty-two billion, two hundred thirteen million, six hundred sixty-nine thousand, two hundred eighty-four".