12420241 has 4 divisors (see below), whose sum is σ = 12515184. Its totient is φ = 12325300.

The previous prime is 12420229. The next prime is 12420257. The reversal of 12420241 is 14202421.

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: 14202421 = 59 ⋅240719.

It is a cyclic number.

It is not a de Polignac number, because 12420241 - 2¹¹ = 12418193 is a prime.

It is a Duffinian number.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12420211) 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, 47275 + ... + 47536.

It is an arithmetic number, because the mean of its divisors is an integer number (3128796).

Almost surely, 2^12420241 is an apocalyptic number.

It is an amenable number.

12420241 is a deficient number, since it is larger than the sum of its proper divisors (94943).

12420241 is an equidigital number, since it uses as much as digits as its factorization.

12420241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94942.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12420241 is about 3524.2362293127. The cubic root of 12420241 is about 231.5847767662.

Adding to 12420241 its reverse (14202421), we get a palindrome (26622662).

It can be divided in two parts, 1 and 2420241, that added together give a palindrome (2420242).

The spelling of 12420241 in words is "twelve million, four hundred twenty thousand, two hundred forty-one".