12912461 has 4 divisors (see below), whose sum is σ = 13329024. Its totient is φ = 12495900.

The previous prime is 12912437. The next prime is 12912479. The reversal of 12912461 is 16421921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16421921 = 281 ⋅58441.

It is a cyclic number.

It is not a de Polignac number, because 12912461 - 2¹⁸ = 12650317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12912461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917461) 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, 208235 + ... + 208296.

It is an arithmetic number, because the mean of its divisors is an integer number (3332256).

Almost surely, 2^12912461 is an apocalyptic number.

It is an amenable number.

12912461 is a deficient number, since it is larger than the sum of its proper divisors (416563).

12912461 is an equidigital number, since it uses as much as digits as its factorization.

12912461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416562.

The product of its digits is 864, while the sum is 26.

The square root of 12912461 is about 3593.3912951417. The cubic root of 12912461 is about 234.6045015025.

The spelling of 12912461 in words is "twelve million, nine hundred twelve thousand, four hundred sixty-one".