12454121 has 4 divisors (see below), whose sum is σ = 12582612. Its totient is φ = 12325632.

The previous prime is 12454111. The next prime is 12454147. The reversal of 12454121 is 12145421.

It is a happy number.

12454121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12145421 = 397 ⋅30593.

It can be written as a sum of positive squares in 2 ways, for example, as 8410000 + 4044121 = 2900^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 12454121 - 2²² = 8259817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12454093 and 12454102.

It is not an unprimeable number, because it can be changed into a prime (12454111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64100 + ... + 64293.

It is an arithmetic number, because the mean of its divisors is an integer number (3145653).

Almost surely, 2^12454121 is an apocalyptic number.

It is an amenable number.

12454121 is a deficient number, since it is larger than the sum of its proper divisors (128491).

12454121 is an equidigital number, since it uses as much as digits as its factorization.

12454121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128490.

The product of its digits is 320, while the sum is 20.

The square root of 12454121 is about 3529.0396710720. The cubic root of 12454121 is about 231.7951583207.

Adding to 12454121 its reverse (12145421), we get a palindrome (24599542).

It can be divided in two parts, 124 and 54121, that added together give a palindrome (54245).

The spelling of 12454121 in words is "twelve million, four hundred fifty-four thousand, one hundred twenty-one".