12421049 has 4 divisors (see below), whose sum is σ = 12821760. Its totient is φ = 12020340.

The previous prime is 12421039. The next prime is 12421051. The reversal of 12421049 is 94012421.

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 12421049 - 2¹⁶ = 12355513 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 (12421009) 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, 200309 + ... + 200370.

It is an arithmetic number, because the mean of its divisors is an integer number (3205440).

Almost surely, 2^12421049 is an apocalyptic number.

It is an amenable number.

12421049 is a deficient number, since it is larger than the sum of its proper divisors (400711).

12421049 is an equidigital number, since it uses as much as digits as its factorization.

12421049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400710.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12421049 is about 3524.3508622156. The cubic root of 12421049 is about 231.5897985808.

The spelling of 12421049 in words is "twelve million, four hundred twenty-one thousand, forty-nine".