12905726 has 4 divisors (see below), whose sum is σ = 19358592. Its totient is φ = 6452862.

The previous prime is 12905723. The next prime is 12905749. The reversal of 12905726 is 62750921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62750921 = 1597 ⋅39293.

It is a super-4 number, since 4×12905726⁴ (a number of 30 digits) contains 4444 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12905692 and 12905701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226430 + ... + 3226433.

It is an arithmetic number, because the mean of its divisors is an integer number (4839648).

Almost surely, 2^12905726 is an apocalyptic number.

12905726 is a deficient number, since it is larger than the sum of its proper divisors (6452866).

12905726 is an equidigital number, since it uses as much as digits as its factorization.

12905726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452865.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12905726 is about 3592.4540358925. The cubic root of 12905726 is about 234.5637053519.

It can be divided in two parts, 12905 and 726, that added together give a palindrome (13631).

The spelling of 12905726 in words is "twelve million, nine hundred five thousand, seven hundred twenty-six".