12148905 has 16 divisors (see below), whose sum is σ = 19494720. Its totient is φ = 6460608.

The previous prime is 12148891. The next prime is 12148921. The reversal of 12148905 is 50984121.

It is a happy number.

It is not a de Polignac number, because 12148905 - 2⁶ = 12148841 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 5319 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (1218420).

Almost surely, 2^12148905 is an apocalyptic number.

12148905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12148905 is a deficient number, since it is larger than the sum of its proper divisors (7345815).

12148905 is a wasteful number, since it uses less digits than its factorization.

12148905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12148905 is about 3485.5279370563. The cubic root of 12148905 is about 229.8859232651.

The spelling of 12148905 in words is "twelve million, one hundred forty-eight thousand, nine hundred five".