12385747442 has 4 divisors (see below), whose sum is σ = 18578621166. Its totient is φ = 6192873720.

The previous prime is 12385747399. The next prime is 12385747453. The reversal of 12385747442 is 24474758321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7570914121 + 4814833321 = 87011^2 + 69389^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3096436859 + ... + 3096436862.

Almost surely, 2^12385747442 is an apocalyptic number.

12385747442 is a deficient number, since it is larger than the sum of its proper divisors (6192873724).

12385747442 is an equidigital number, since it uses as much as digits as its factorization.

12385747442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192873723.

The product of its digits is 1505280, while the sum is 47.

The spelling of 12385747442 in words is "twelve billion, three hundred eighty-five million, seven hundred forty-seven thousand, four hundred forty-two".