12402145 has 24 divisors (see below), whose sum is σ = 17466624. Its totient is φ = 8428896.

The previous prime is 12402133. The next prime is 12402149. The reversal of 12402145 is 54120421.

12402145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12402145 - 2⁵ = 12402113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12402149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54522 + ... + 54748.

It is an arithmetic number, because the mean of its divisors is an integer number (727776).

Almost surely, 2^12402145 is an apocalyptic number.

It is an amenable number.

12402145 is a deficient number, since it is larger than the sum of its proper divisors (5064479).

12402145 is a wasteful number, since it uses less digits than its factorization.

12402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 462 counting only the distinct ones).

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

The square root of 12402145 is about 3521.6679286952. The cubic root of 12402145 is about 231.4722509022.

Adding to 12402145 its reverse (54120421), we get a palindrome (66522566).

The spelling of 12402145 in words is "twelve million, four hundred two thousand, one hundred forty-five".