842518097 has 2 divisors, whose sum is σ = 842518098. Its totient is φ = 842518096.

The previous prime is 842518091. The next prime is 842518123. The reversal of 842518097 is 790815248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820765201 + 21752896 = 28649^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 842518097 - 2⁴ = 842518081 is a prime.

It is not a weakly prime, because it can be changed into another prime (842518091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421259048 + 421259049.

It is an arithmetic number, because the mean of its divisors is an integer number (421259049).

Almost surely, 2^842518097 is an apocalyptic number.

It is an amenable number.

842518097 is a deficient number, since it is larger than the sum of its proper divisors (1).

842518097 is an equidigital number, since it uses as much as digits as its factorization.

842518097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 842518097 is about 29026.1622850834. The cubic root of 842518097 is about 944.4806817894.

The spelling of 842518097 in words is "eight hundred forty-two million, five hundred eighteen thousand, ninety-seven".