12423688240 has 20 divisors (see below), whose sum is σ = 28885075344. Its totient is φ = 4969475264.

The previous prime is 12423688237. The next prime is 12423688243. The reversal of 12423688240 is 4288632421.

It is an interprime number because it is at equal distance from previous prime (12423688237) and next prime (12423688243).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12423688193 and 12423688202.

It is not an unprimeable number, because it can be changed into a prime (12423688243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77647972 + ... + 77648131.

Almost surely, 2^12423688240 is an apocalyptic number.

12423688240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12423688240 is an abundant number, since it is smaller than the sum of its proper divisors (16461387104).

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

12423688240 is a wasteful number, since it uses less digits than its factorization.

12423688240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155296116 (or 155296110 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 12423688240 in words is "twelve billion, four hundred twenty-three million, six hundred eighty-eight thousand, two hundred forty".