842040518 has 32 divisors (see below), whose sum is σ = 1463322240. Its totient is φ = 359372160.

The previous prime is 842040517. The next prime is 842040527. The reversal of 842040518 is 815040248.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842040517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38321 + ... + 56147.

It is an arithmetic number, because the mean of its divisors is an integer number (45728820).

Almost surely, 2^842040518 is an apocalyptic number.

842040518 is a deficient number, since it is larger than the sum of its proper divisors (621281722).

842040518 is a wasteful number, since it uses less digits than its factorization.

842040518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17972.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 842040518 is about 29017.9344199411. The cubic root of 842040518 is about 944.3021893249.

The spelling of 842040518 in words is "eight hundred forty-two million, forty thousand, five hundred eighteen".