12305543042 has 16 divisors (see below), whose sum is σ = 19941706680. Its totient is φ = 5661332352.

The previous prime is 12305542987. The next prime is 12305543083. The reversal of 12305543042 is 24034550321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4774948201 + 7530594841 = 69101^2 + 86779^2 .

It is a super-2 number, since 2×12305543042² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12305542996 and 12305543014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747917 + ... + 764192.

Almost surely, 2^12305543042 is an apocalyptic number.

12305543042 is a deficient number, since it is larger than the sum of its proper divisors (7636163638).

12305543042 is a wasteful number, since it uses less digits than its factorization.

12305543042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512437.

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 12305543042 in words is "twelve billion, three hundred five million, five hundred forty-three thousand, forty-two".