842540904 has 48 divisors (see below), whose sum is σ = 2285556000. Its totient is φ = 280394784.

The previous prime is 842540873. The next prime is 842540911. The reversal of 842540904 is 409045248.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 37197 + ... + 55395.

It is an arithmetic number, because the mean of its divisors is an integer number (47615750).

Almost surely, 2^842540904 is an apocalyptic number.

It is an amenable number.

842540904 is an abundant number, since it is smaller than the sum of its proper divisors (1443015096).

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

842540904 is a wasteful number, since it uses less digits than its factorization.

842540904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854 (or 18847 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 842540904 is about 29026.5551521361. Note that the first 3 decimals coincide. The cubic root of 842540904 is about 944.4892040896.

The spelling of 842540904 in words is "eight hundred forty-two million, five hundred forty thousand, nine hundred four".