12740434 has 8 divisors (see below), whose sum is σ = 21840768. Its totient is φ = 5460180.

The previous prime is 12740423. The next prime is 12740449. The reversal of 12740434 is 43404721.

12740434 = 661² + 662² + ... + 688².

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 = 12740399 and 12740408.

It is an unprimeable number.

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, 455002 + ... + 455029.

It is an arithmetic number, because the mean of its divisors is an integer number (2730096).

Almost surely, 2^12740434 is an apocalyptic number.

12740434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12740434 is a deficient number, since it is larger than the sum of its proper divisors (9100334).

12740434 is an equidigital number, since it uses as much as digits as its factorization.

12740434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910040.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 12740434 is about 3569.3744549991. The cubic root of 12740434 is about 233.5579963142.

The spelling of 12740434 in words is "twelve million, seven hundred forty thousand, four hundred thirty-four".