12420461 has 4 divisors (see below), whose sum is σ = 12541152. Its totient is φ = 12299772.

The previous prime is 12420451. The next prime is 12420469. The reversal of 12420461 is 16402421.

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: 16402421 = 7 ⋅2343203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12420461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420469) 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, 60191 + ... + 60396.

It is an arithmetic number, because the mean of its divisors is an integer number (3135288).

Almost surely, 2^12420461 is an apocalyptic number.

It is an amenable number.

12420461 is a deficient number, since it is larger than the sum of its proper divisors (120691).

12420461 is a wasteful number, since it uses less digits than its factorization.

12420461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120690.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12420461 is about 3524.2674416111. The cubic root of 12420461 is about 231.5861441136.

Adding to 12420461 its reverse (16402421), we get a palindrome (28822882).

The spelling of 12420461 in words is "twelve million, four hundred twenty thousand, four hundred sixty-one".