12420939 has 8 divisors (see below), whose sum is σ = 16604560. Its totient is φ = 8258976.

The previous prime is 12420923. The next prime is 12420973. The reversal of 12420939 is 93902421.

12420939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12420939 - 2⁴ = 12420923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4024 + ... + 6405.

It is an arithmetic number, because the mean of its divisors is an integer number (2075570).

Almost surely, 2^12420939 is an apocalyptic number.

12420939 is a deficient number, since it is larger than the sum of its proper divisors (4183621).

12420939 is a wasteful number, since it uses less digits than its factorization.

12420939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 12420939 is about 3524.3352564704. The cubic root of 12420939 is about 231.5891149307.

The spelling of 12420939 in words is "twelve million, four hundred twenty thousand, nine hundred thirty-nine".