12740422 has 8 divisors (see below), whose sum is σ = 19576872. Its totient is φ = 6214800.

The previous prime is 12740369. The next prime is 12740423. The reversal of 12740422 is 22404721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12740393 and 12740402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12740423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77604 + ... + 77767.

It is an arithmetic number, because the mean of its divisors is an integer number (2447109).

Almost surely, 2^12740422 is an apocalyptic number.

12740422 is a deficient number, since it is larger than the sum of its proper divisors (6836450).

12740422 is a wasteful number, since it uses less digits than its factorization.

12740422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155414.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 12740422 is about 3569.3727740319. The cubic root of 12740422 is about 233.5579229860.

The spelling of 12740422 in words is "twelve million, seven hundred forty thousand, four hundred twenty-two".