12423145 has 16 divisors (see below), whose sum is σ = 17256960. Its totient is φ = 8409024.

The previous prime is 12423143. The next prime is 12423149. The reversal of 12423145 is 54132421.

It is a cyclic number.

It is not a de Polignac number, because 12423145 - 2¹ = 12423143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12423143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519 + ... + 5011.

It is an arithmetic number, because the mean of its divisors is an integer number (1078560).

Almost surely, 2^12423145 is an apocalyptic number.

It is an amenable number.

12423145 is a deficient number, since it is larger than the sum of its proper divisors (4833815).

12423145 is an equidigital number, since it uses as much as digits as its factorization.

12423145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4584.

The product of its digits is 960, while the sum is 22.

The square root of 12423145 is about 3524.6482093962. The cubic root of 12423145 is about 231.6028244510.

Adding to 12423145 its reverse (54132421), we get a palindrome (66555566).

The spelling of 12423145 in words is "twelve million, four hundred twenty-three thousand, one hundred forty-five".