12148261 has 4 divisors (see below), whose sum is σ = 12162400. Its totient is φ = 12134124.

The previous prime is 12148243. The next prime is 12148267. The reversal of 12148261 is 16284121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12148261 - 2⁵ = 12148229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12148267) 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 3 ways as a sum of consecutive naturals, for example, 5691 + ... + 7528.

It is an arithmetic number, because the mean of its divisors is an integer number (3040600).

Almost surely, 2^12148261 is an apocalyptic number.

It is an amenable number.

12148261 is a deficient number, since it is larger than the sum of its proper divisors (14139).

12148261 is an equidigital number, since it uses as much as digits as its factorization.

12148261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14138.

The product of its digits is 768, while the sum is 25.

The square root of 12148261 is about 3485.4355538440. The cubic root of 12148261 is about 229.8818611939.

The spelling of 12148261 in words is "twelve million, one hundred forty-eight thousand, two hundred sixty-one".