844530042 has 16 divisors (see below), whose sum is σ = 1714270752. Its totient is φ = 277308240.

The previous prime is 844529977. The next prime is 844530091. The reversal of 844530042 is 240035448.

It is a junction number, because it is equal to n+sod(n) for n = 844529991 and 844530009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050009 + ... + 1050812.

It is an arithmetic number, because the mean of its divisors is an integer number (107141922).

Almost surely, 2^844530042 is an apocalyptic number.

844530042 is an abundant number, since it is smaller than the sum of its proper divisors (869740710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844530042 is a wasteful number, since it uses less digits than its factorization.

844530042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100893.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 844530042 is about 29060.7990599020. The cubic root of 844530042 is about 945.2318951632.

The spelling of 844530042 in words is "eight hundred forty-four million, five hundred thirty thousand, forty-two".