842450617 has 2 divisors, whose sum is σ = 842450618. Its totient is φ = 842450616.

The previous prime is 842450611. The next prime is 842450629. The reversal of 842450617 is 716054248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681262201 + 161188416 = 26101^2 + 12696^2 .

It is a cyclic number.

It is not a de Polignac number, because 842450617 - 2¹¹ = 842448569 is a prime.

It is not a weakly prime, because it can be changed into another prime (842450611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421225308 + 421225309.

It is an arithmetic number, because the mean of its divisors is an integer number (421225309).

Almost surely, 2^842450617 is an apocalyptic number.

It is an amenable number.

842450617 is a deficient number, since it is larger than the sum of its proper divisors (1).

842450617 is an equidigital number, since it uses as much as digits as its factorization.

842450617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 842450617 is about 29024.9998621878. Note that the first 3 decimals coincide. The cubic root of 842450617 is about 944.4554656117.

The spelling of 842450617 in words is "eight hundred forty-two million, four hundred fifty thousand, six hundred seventeen".