840972211202 has 6 divisors (see below), whose sum is σ = 1261460262153. Its totient is φ = 420485457152.

The previous prime is 840972211187. The next prime is 840972211223. The reversal of 840972211202 is 202112279048.

It can be written as a sum of positive squares in 2 ways, for example, as 691041401521 + 149930809681 = 831289^2 + 387209^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=648449.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 972674 + ... + 1621122.

Almost surely, 2^840972211202 is an apocalyptic number.

840972211202 is a deficient number, since it is larger than the sum of its proper divisors (420488050951).

840972211202 is an frugal number, since it uses more digits than its factorization.

840972211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296900 (or 648451 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 840972211202 in words is "eight hundred forty billion, nine hundred seventy-two million, two hundred eleven thousand, two hundred two".