12345045042 has 64 divisors (see below), whose sum is σ = 27694339200. Its totient is φ = 3635642880.

The previous prime is 12345044993. The next prime is 12345045043. The reversal of 12345045042 is 24054054321.

It is not an unprimeable number, because it can be changed into a prime (12345045043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2608134 + ... + 2612862.

It is an arithmetic number, because the mean of its divisors is an integer number (432724050).

Almost surely, 2^12345045042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12345045042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13847169600).

12345045042 is an abundant number, since it is smaller than the sum of its proper divisors (15349294158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12345045042 is a wasteful number, since it uses less digits than its factorization.

12345045042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 12345045042 its reverse (24054054321), we get a palindrome (36399099363).

The spelling of 12345045042 in words is "twelve billion, three hundred forty-five million, forty-five thousand, forty-two".