12474921 has 4 divisors (see below), whose sum is σ = 16633232. Its totient is φ = 8316612.

The previous prime is 12474911. The next prime is 12474929. The reversal of 12474921 is 12947421.

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 not a de Polignac number, because 12474921 - 2⁷ = 12474793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12474929) 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, 2079151 + ... + 2079156.

It is an arithmetic number, because the mean of its divisors is an integer number (4158308).

Almost surely, 2^12474921 is an apocalyptic number.

It is an amenable number.

12474921 is a deficient number, since it is larger than the sum of its proper divisors (4158311).

12474921 is an equidigital number, since it uses as much as digits as its factorization.

12474921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158310.

The product of its digits is 4032, while the sum is 30.

The square root of 12474921 is about 3531.9854189960. The cubic root of 12474921 is about 231.9241292236.

The spelling of 12474921 in words is "twelve million, four hundred seventy-four thousand, nine hundred twenty-one".