842610561281 has 8 divisors (see below), whose sum is σ = 881711818344. Its totient is φ = 804368672640.

The previous prime is 842610561271. The next prime is 842610561311. The reversal of 842610561281 is 182165016248.

It can be written as a sum of positive squares in 4 ways, for example, as 465103540225 + 377507021056 = 681985^2 + 614416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 842610561281 - 2¹⁰ = 842610560257 is a prime.

It is a super-2 number, since 2×842610561281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842610561251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214840100 + ... + 214844021.

It is an arithmetic number, because the mean of its divisors is an integer number (110213977293).

Almost surely, 2^842610561281 is an apocalyptic number.

It is an amenable number.

842610561281 is a deficient number, since it is larger than the sum of its proper divisors (39101257063).

842610561281 is a wasteful number, since it uses less digits than its factorization.

842610561281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429684211.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 842610561281 in words is "eight hundred forty-two billion, six hundred ten million, five hundred sixty-one thousand, two hundred eighty-one".