12342921 has 4 divisors (see below), whose sum is σ = 16457232. Its totient is φ = 8228612.

The previous prime is 12342917. The next prime is 12342931. The reversal of 12342921 is 12924321.

12342921 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 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 12342921 - 2² = 12342917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12342891 and 12342900.

It is not an unprimeable number, because it can be changed into a prime (12342931) 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, 2057151 + ... + 2057156.

It is an arithmetic number, because the mean of its divisors is an integer number (4114308).

Almost surely, 2^12342921 is an apocalyptic number.

It is an amenable number.

12342921 is a deficient number, since it is larger than the sum of its proper divisors (4114311).

12342921 is an equidigital number, since it uses as much as digits as its factorization.

12342921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114310.

The product of its digits is 864, while the sum is 24.

The square root of 12342921 is about 3513.2493506724. The cubic root of 12342921 is about 231.1032128112.

The spelling of 12342921 in words is "twelve million, three hundred forty-two thousand, nine hundred twenty-one".