842377865 has 12 divisors (see below), whose sum is σ = 1175891076. Its totient is φ = 577630368.

The previous prime is 842377859. The next prime is 842377883. The reversal of 842377865 is 568773248.

It can be written as a sum of positive squares in 2 ways, for example, as 662496121 + 179881744 = 25739^2 + 13412^2 .

It is a de Polignac number, because none of the positive numbers 2^k-842377865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1718894 + ... + 1719383.

It is an arithmetic number, because the mean of its divisors is an integer number (97990923).

Almost surely, 2^842377865 is an apocalyptic number.

It is an amenable number.

842377865 is a deficient number, since it is larger than the sum of its proper divisors (333513211).

842377865 is a wasteful number, since it uses less digits than its factorization.

842377865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438296 (or 3438289 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 50.

The square root of 842377865 is about 29023.7465706962. The cubic root of 842377865 is about 944.4282778650.

The spelling of 842377865 in words is "eight hundred forty-two million, three hundred seventy-seven thousand, eight hundred sixty-five".