12542145104 has 10 divisors (see below), whose sum is σ = 24300406170. Its totient is φ = 6271072544.

The previous prime is 12542145053. The next prime is 12542145107. The reversal of 12542145104 is 40154124521.

It is a happy number.

12542145104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11183485504 + 1358659600 = 105752^2 + 36860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542145107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391942019 + ... + 391942050.

It is an arithmetic number, because the mean of its divisors is an integer number (2430040617).

Almost surely, 2^12542145104 is an apocalyptic number.

It is an amenable number.

12542145104 is a deficient number, since it is larger than the sum of its proper divisors (11758261066).

12542145104 is an equidigital number, since it uses as much as digits as its factorization.

12542145104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783884077 (or 783884071 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 12542145104 its reverse (40154124521), we get a palindrome (52696269625).

The spelling of 12542145104 in words is "twelve billion, five hundred forty-two million, one hundred forty-five thousand, one hundred four".