12740424 has 16 divisors (see below), whose sum is σ = 31851120. Its totient is φ = 4246800.

The previous prime is 12740423. The next prime is 12740449. The reversal of 12740424 is 42404721.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 530851 = 12740424 / (1 + 2 + 7 + 4 + 0 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 12740394 and 12740403.

It is not an unprimeable number, because it can be changed into a prime (12740423) 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, 265402 + ... + 265449.

It is an arithmetic number, because the mean of its divisors is an integer number (1990695).

Almost surely, 2^12740424 is an apocalyptic number.

It is an amenable number.

12740424 is an abundant number, since it is smaller than the sum of its proper divisors (19110696).

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

12740424 is a wasteful number, since it uses less digits than its factorization.

12740424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530860 (or 530856 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 12740424 is about 3569.3730541931. The cubic root of 12740424 is about 233.5579352074.

The spelling of 12740424 in words is "twelve million, seven hundred forty thousand, four hundred twenty-four".