12370421 has 4 divisors (see below), whose sum is σ = 14137632. Its totient is φ = 10603212.

The previous prime is 12370409. The next prime is 12370429. The reversal of 12370421 is 12407321.

12370421 is digitally balanced in base 3, 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 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 12370421 - 2⁶ = 12370357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12370393 and 12370402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12370429) 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, 883595 + ... + 883608.

It is an arithmetic number, because the mean of its divisors is an integer number (3534408).

Almost surely, 2^12370421 is an apocalyptic number.

It is an amenable number.

12370421 is a deficient number, since it is larger than the sum of its proper divisors (1767211).

12370421 is an equidigital number, since it uses as much as digits as its factorization.

12370421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767210.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12370421 is about 3517.1609289312. The cubic root of 12370421 is about 231.2747179812.

Adding to 12370421 its reverse (12407321), we get a palindrome (24777742).

The spelling of 12370421 in words is "twelve million, three hundred seventy thousand, four hundred twenty-one".