842261806240 has 48 divisors (see below), whose sum is σ = 2058458822280. Its totient is φ = 325287316480.

The previous prime is 842261806187. The next prime is 842261806249. The reversal of 842261806240 is 42608162248.

It can be written as a sum of positive squares in 4 ways, for example, as 441071313424 + 401190492816 = 664132^2 + 633396^2 .

It is not an unprimeable number, because it can be changed into a prime (842261806249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90756331 + ... + 90765610.

Almost surely, 2^842261806240 is an apocalyptic number.

842261806240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

842261806240 is an abundant number, since it is smaller than the sum of its proper divisors (1216197016040).

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

842261806240 is a wasteful number, since it uses less digits than its factorization.

842261806240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181521985 (or 181521977 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

Adding to 842261806240 its reverse (42608162248), we get a palindrome (884869968488).

The spelling of 842261806240 in words is "eight hundred forty-two billion, two hundred sixty-one million, eight hundred six thousand, two hundred forty".