12423013428 has 48 divisors (see below), whose sum is σ = 34871621120. Its totient is φ = 3362619744.

The previous prime is 12423013331. The next prime is 12423013429. The reversal of 12423013428 is 82431032421.

It is a super-2 number, since 2×12423013428² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12423013395 and 12423013404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423013429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3890326 + ... + 3893517.

Almost surely, 2^12423013428 is an apocalyptic number.

It is an amenable number.

12423013428 is an abundant number, since it is smaller than the sum of its proper divisors (22448607692).

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

12423013428 is a wasteful number, since it uses less digits than its factorization.

12423013428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783876 (or 7783874 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 12423013428 its reverse (82431032421), we get a palindrome (94854045849).

The spelling of 12423013428 in words is "twelve billion, four hundred twenty-three million, thirteen thousand, four hundred twenty-eight".