12047402642 has 16 divisors (see below), whose sum is σ = 19719212832. Its totient is φ = 5474625120.

The previous prime is 12047402641. The next prime is 12047402657. The reversal of 12047402642 is 24620474021.

It is a junction number, because it is equal to n+sod(n) for n = 12047402599 and 12047402608.

It is not an unprimeable number, because it can be changed into a prime (12047402641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12893 + ... + 155759.

It is an arithmetic number, because the mean of its divisors is an integer number (1232450802).

Almost surely, 2^12047402642 is an apocalyptic number.

12047402642 is a deficient number, since it is larger than the sum of its proper divisors (7671810190).

12047402642 is a wasteful number, since it uses less digits than its factorization.

12047402642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146713.

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 12047402642 its reverse (24620474021), we get a palindrome (36667876663).

The spelling of 12047402642 in words is "twelve billion, forty-seven million, four hundred two thousand, six hundred forty-two".