12420124 has 12 divisors (see below), whose sum is σ = 21866544. Its totient is φ = 6172544.

The previous prime is 12420097. The next prime is 12420131. The reversal of 12420124 is 42102421.

It is a junction number, because it is equal to n+sod(n) for n = 12420098 and 12420107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8629 + ... + 9964.

It is an arithmetic number, because the mean of its divisors is an integer number (1822212).

Almost surely, 2^12420124 is an apocalyptic number.

It is an amenable number.

12420124 is a deficient number, since it is larger than the sum of its proper divisors (9446420).

12420124 is a wasteful number, since it uses less digits than its factorization.

12420124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18764 (or 18762 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12420124 is about 3524.2196299323. The cubic root of 12420124 is about 231.5840495795.

Adding to 12420124 its reverse (42102421), we get a palindrome (54522545).

It can be divided in two parts, 12420 and 124, that added together give a square (12544 = 112²).

The spelling of 12420124 in words is "twelve million, four hundred twenty thousand, one hundred twenty-four".