842547347 has 2 divisors, whose sum is σ = 842547348. Its totient is φ = 842547346.

The previous prime is 842547301. The next prime is 842547361. The reversal of 842547347 is 743745248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842547347 - 2⁶ = 842547283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842547298 and 842547307.

It is not a weakly prime, because it can be changed into another prime (842544347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421273673 + 421273674.

It is an arithmetic number, because the mean of its divisors is an integer number (421273674).

Almost surely, 2^842547347 is an apocalyptic number.

842547347 is a deficient number, since it is larger than the sum of its proper divisors (1).

842547347 is an equidigital number, since it uses as much as digits as its factorization.

842547347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 44.

The square root of 842547347 is about 29026.6661365028. Note that the first 3 decimals coincide. The cubic root of 842547347 is about 944.4916116200.

The spelling of 842547347 in words is "eight hundred forty-two million, five hundred forty-seven thousand, three hundred forty-seven".