12140420424 has 64 divisors (see below), whose sum is σ = 34852896000. Its totient is φ = 3485286720.

The previous prime is 12140420419. The next prime is 12140420429. The reversal of 12140420424 is 42402404121.

It is an interprime number because it is at equal distance from previous prime (12140420419) and next prime (12140420429).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12140420394 and 12140420403.

It is not an unprimeable number, because it can be changed into a prime (12140420429) 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, 1205154 + ... + 1215185.

It is an arithmetic number, because the mean of its divisors is an integer number (544576500).

Almost surely, 2^12140420424 is an apocalyptic number.

It is an amenable number.

12140420424 is an abundant number, since it is smaller than the sum of its proper divisors (22712475576).

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

12140420424 is a wasteful number, since it uses less digits than its factorization.

12140420424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420378 (or 2420374 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12140420424 its reverse (42402404121), we get a palindrome (54542824545).

The spelling of 12140420424 in words is "twelve billion, one hundred forty million, four hundred twenty thousand, four hundred twenty-four".