12840063942 has 16 divisors (see below), whose sum is σ = 25681674240. Its totient is φ = 4279763592.

The previous prime is 12840063923. The next prime is 12840063961. The reversal of 12840063942 is 24936004821.

It is an interprime number because it is at equal distance from previous prime (12840063923) and next prime (12840063961).

It is a self number, because there is not a number n which added to its sum of digits gives 12840063942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62859 + ... + 172137.

It is an arithmetic number, because the mean of its divisors is an integer number (1605104640).

Almost surely, 2^12840063942 is an apocalyptic number.

12840063942 is an abundant number, since it is smaller than the sum of its proper divisors (12841610298).

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

12840063942 is a wasteful number, since it uses less digits than its factorization.

12840063942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128867.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 12840063942 in words is "twelve billion, eight hundred forty million, sixty-three thousand, nine hundred forty-two".