12420149 has 32 divisors (see below), whose sum is σ = 16070400. Its totient is φ = 9354240.

The previous prime is 12420139. The next prime is 12420151. The reversal of 12420149 is 94102421.

12420149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12420149 - 2¹⁶ = 12354613 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 (12420139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203579 + ... + 203639.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^12420149 is an apocalyptic number.

It is an amenable number.

12420149 is a deficient number, since it is larger than the sum of its proper divisors (3650251).

12420149 is a wasteful number, since it uses less digits than its factorization.

12420149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173.

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

The square root of 12420149 is about 3524.2231768150. The cubic root of 12420149 is about 231.5842049616.

The spelling of 12420149 in words is "twelve million, four hundred twenty thousand, one hundred forty-nine".