12453145 has 8 divisors (see below), whose sum is σ = 15226056. Its totient is φ = 9774336.

The previous prime is 12453131. The next prime is 12453157. The reversal of 12453145 is 54135421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 259081 + 12194064 = 509^2 + 3492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12453145 - 2⁷ = 12453017 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 23232 + ... + 23761.

It is an arithmetic number, because the mean of its divisors is an integer number (1903257).

Almost surely, 2^12453145 is an apocalyptic number.

It is an amenable number.

12453145 is a deficient number, since it is larger than the sum of its proper divisors (2772911).

12453145 is an equidigital number, since it uses as much as digits as its factorization.

12453145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47051.

The product of its digits is 2400, while the sum is 25.

The square root of 12453145 is about 3528.9013871175. The cubic root of 12453145 is about 231.7891030831.

Adding to 12453145 its reverse (54135421), we get a palindrome (66588566).

The spelling of 12453145 in words is "twelve million, four hundred fifty-three thousand, one hundred forty-five".