842540616 has 80 divisors (see below), whose sum is σ = 2423743740. Its totient is φ = 273248640.

The previous prime is 842540597. The next prime is 842540627. The reversal of 842540616 is 616045248.

It can be written as a sum of positive squares in 2 ways, for example, as 813960900 + 28579716 = 28530^2 + 5346^2 .

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 (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6406 + ... + 41546.

Almost surely, 2^842540616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842540616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211871870).

842540616 is an abundant number, since it is smaller than the sum of its proper divisors (1581203124).

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

842540616 is a wasteful number, since it uses less digits than its factorization.

842540616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35196 (or 35183 counting only the distinct ones).

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

The square root of 842540616 is about 29026.5501911612. The cubic root of 842540616 is about 944.4890964735.

The spelling of 842540616 in words is "eight hundred forty-two million, five hundred forty thousand, six hundred sixteen".