12705434 has 16 divisors (see below), whose sum is σ = 21940800. Its totient is φ = 5405184.

The previous prime is 12705419. The next prime is 12705437. The reversal of 12705434 is 43450721.

It is a super-2 number, since 2×12705434² = 322856106256712, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12705437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (1371300).

Almost surely, 2^12705434 is an apocalyptic number.

12705434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12705434 is a deficient number, since it is larger than the sum of its proper divisors (9235366).

12705434 is a wasteful number, since it uses less digits than its factorization.

12705434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 12705434 is about 3564.4682632898. The cubic root of 12705434 is about 233.3439265032.

The spelling of 12705434 in words is "twelve million, seven hundred five thousand, four hundred thirty-four".