12742340 has 24 divisors (see below), whose sum is σ = 28817880. Its totient is φ = 4704768.

The previous prime is 12742321. The next prime is 12742343. The reversal of 12742340 is 4324721.

It can be written as a sum of positive squares in 4 ways, for example, as 743044 + 11999296 = 862^2 + 3464^2 .

It is not an unprimeable number, because it can be changed into a prime (12742343) 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 7 ways as a sum of consecutive naturals, for example, 24245 + ... + 24764.

It is an arithmetic number, because the mean of its divisors is an integer number (1200745).

Almost surely, 2^12742340 is an apocalyptic number.

12742340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12742340 is an abundant number, since it is smaller than the sum of its proper divisors (16075540).

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

12742340 is a wasteful number, since it uses less digits than its factorization.

12742340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49031 (or 49029 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 12742340 is about 3569.6414385761. The cubic root of 12742340 is about 233.5696426821.

The spelling of 12742340 in words is "twelve million, seven hundred forty-two thousand, three hundred forty".