12000421242 has 32 divisors (see below), whose sum is σ = 28071163200. Its totient is φ = 3789606384.

The previous prime is 12000421231. The next prime is 12000421243. The reversal of 12000421242 is 24212400021.

12000421242 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 0 + 421 + 242 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12000421243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5847133 + ... + 5849184.

It is an arithmetic number, because the mean of its divisors is an integer number (877223850).

Almost surely, 2^12000421242 is an apocalyptic number.

12000421242 is an abundant number, since it is smaller than the sum of its proper divisors (16070741958).

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

12000421242 is a wasteful number, since it uses less digits than its factorization.

12000421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11696347 (or 11696341 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12000421242 its reverse (24212400021), we get a palindrome (36212821263).

It can be divided in two parts, 120004 and 21242, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 12000421242 in words is "twelve billion, four hundred twenty-one thousand, two hundred forty-two".