842445315 has 12 divisors (see below), whose sum is σ = 1460238624. Its totient is φ = 449304144.

The previous prime is 842445299. The next prime is 842445407. The reversal of 842445315 is 513544248.

It is a happy number.

842445315 is a `hidden beast` number, since 84 + 2 + 44 + 531 + 5 = 666.

It is not a de Polignac number, because 842445315 - 2⁴ = 842445299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842445315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9360459 + ... + 9360548.

It is an arithmetic number, because the mean of its divisors is an integer number (121686552).

Almost surely, 2^842445315 is an apocalyptic number.

842445315 is a deficient number, since it is larger than the sum of its proper divisors (617793309).

842445315 is a wasteful number, since it uses less digits than its factorization.

842445315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18721018 (or 18721015 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 842445315 is about 29024.9085269876. The cubic root of 842445315 is about 944.4534842836.

The spelling of 842445315 in words is "eight hundred forty-two million, four hundred forty-five thousand, three hundred fifteen".