12423000040 has 32 divisors (see below), whose sum is σ = 30492819360. Its totient is φ = 4517454400.

The previous prime is 12423000013. The next prime is 12423000049. The reversal of 12423000040 is 4000032421.

It is a junction number, because it is equal to n+sod(n) for n = 12422999978 and 12423000023.

It is not an unprimeable number, because it can be changed into a prime (12423000049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14116606 + ... + 14117485.

It is an arithmetic number, because the mean of its divisors is an integer number (952900605).

Almost surely, 2^12423000040 is an apocalyptic number.

12423000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12423000040 is an abundant number, since it is smaller than the sum of its proper divisors (18069819320).

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

12423000040 is a wasteful number, since it uses less digits than its factorization.

12423000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28234113 (or 28234109 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12423000040 its reverse (4000032421), we get a palindrome (16423032461).

The spelling of 12423000040 in words is "twelve billion, four hundred twenty-three million, forty", and thus it is an aban number.