12027630842 has 4 divisors (see below), whose sum is σ = 18041446266. Its totient is φ = 6013815420.

The previous prime is 12027630841. The next prime is 12027630847. The reversal of 12027630842 is 24803672021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24803672021 = 163 ⋅152169767.

It can be written as a sum of positive squares in only one way, i.e., 12023341801 + 4289041 = 109651^2 + 2071^2 .

It is not an unprimeable number, because it can be changed into a prime (12027630841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3006907709 + ... + 3006907712.

Almost surely, 2^12027630842 is an apocalyptic number.

12027630842 is a deficient number, since it is larger than the sum of its proper divisors (6013815424).

12027630842 is an equidigital number, since it uses as much as digits as its factorization.

12027630842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013815423.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 12027630842 in words is "twelve billion, twenty-seven million, six hundred thirty thousand, eight hundred forty-two".