12840969124 has 9 divisors (see below), whose sum is σ = 22472092587. Its totient is φ = 6420371244.

The previous prime is 12840969121. The next prime is 12840969133. The reversal of 12840969124 is 42196904821.

The square root of 12840969124 is 113318.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12840969121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 198307 + ... + 254965.

Almost surely, 2^12840969124 is an apocalyptic number.

12840969124 is the 113318-th square number.

It is an amenable number.

12840969124 is a deficient number, since it is larger than the sum of its proper divisors (9631123463).

12840969124 is an frugal number, since it uses more digits than its factorization.

12840969124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113322 (or 56661 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 12840969124 in words is "twelve billion, eight hundred forty million, nine hundred sixty-nine thousand, one hundred twenty-four".