12405412 has 6 divisors (see below), whose sum is σ = 21709478. Its totient is φ = 6202704.

The previous prime is 12405403. The next prime is 12405431. The reversal of 12405412 is 21450421.

12405412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8145316 + 4260096 = 2854^2 + 2064^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12405412.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550673 + ... + 1550680.

Almost surely, 2^12405412 is an apocalyptic number.

It is an amenable number.

12405412 is a deficient number, since it is larger than the sum of its proper divisors (9304066).

12405412 is a wasteful number, since it uses less digits than its factorization.

12405412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101357 (or 3101355 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12405412 is about 3522.1317408638. The cubic root of 12405412 is about 231.4925740924.

Adding to 12405412 its reverse (21450421), we get a palindrome (33855833).

The spelling of 12405412 in words is "twelve million, four hundred five thousand, four hundred twelve".