842547361 has 2 divisors, whose sum is σ = 842547362. Its totient is φ = 842547360.

The previous prime is 842547347. The next prime is 842547371. The reversal of 842547361 is 163745248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654336400 + 188210961 = 25580^2 + 13719^2 .

It is a cyclic number.

It is not a de Polignac number, because 842547361 - 2¹³ = 842539169 is a prime.

It is not a weakly prime, because it can be changed into another prime (842547301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421273680 + 421273681.

It is an arithmetic number, because the mean of its divisors is an integer number (421273681).

Almost surely, 2^842547361 is an apocalyptic number.

It is an amenable number.

842547361 is a deficient number, since it is larger than the sum of its proper divisors (1).

842547361 is an equidigital number, since it uses as much as digits as its factorization.

842547361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 842547361 is about 29026.6663776604. Note that the first 3 decimals coincide. The cubic root of 842547361 is about 944.4916168513.

The spelling of 842547361 in words is "eight hundred forty-two million, five hundred forty-seven thousand, three hundred sixty-one".