12120143994 has 32 divisors (see below), whose sum is σ = 30781319040. Its totient is φ = 3462898176.

The previous prime is 12120143989. The next prime is 12120144007. The reversal of 12120143994 is 49934102121.

12120143994 is a `hidden beast` number, since 1 + 212 + 0 + 1 + 439 + 9 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16031559 + ... + 16032314.

It is an arithmetic number, because the mean of its divisors is an integer number (961916220).

Almost surely, 2^12120143994 is an apocalyptic number.

12120143994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12120143994 is an abundant number, since it is smaller than the sum of its proper divisors (18661175046).

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

12120143994 is a wasteful number, since it uses less digits than its factorization.

12120143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32063891 (or 32063885 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 12120143994 in words is "twelve billion, one hundred twenty million, one hundred forty-three thousand, nine hundred ninety-four".