840959242272 has 54 divisors (see below), whose sum is σ = 2391522102333. Its totient is φ = 280314559872.

The previous prime is 840959242157. The next prime is 840959242273. The reversal of 840959242272 is 272242959048.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

840959242272 is a `hidden beast` number, since 8 + 4 + 0 + 9 + 592 + 42 + 2 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 602741060496 + 238218181776 = 776364^2 + 488076^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=648444.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (840959242273) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15535638 + ... + 15589674.

Almost surely, 2^840959242272 is an apocalyptic number.

It is an amenable number.

840959242272 is an abundant number, since it is smaller than the sum of its proper divisors (1550562860061).

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

840959242272 is an frugal number, since it uses more digits than its factorization.

840959242272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108090 (or 54042 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 840959242272 in words is "eight hundred forty billion, nine hundred fifty-nine million, two hundred forty-two thousand, two hundred seventy-two".