12423545 has 8 divisors (see below), whose sum is σ = 14943624. Its totient is φ = 9915264.

The previous prime is 12423539. The next prime is 12423563. The reversal of 12423545 is 54532421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3489424 + 8934121 = 1868^2 + 2989^2 .

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 12423545 - 2²⁰ = 11374969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (1867953).

Almost surely, 2^12423545 is an apocalyptic number.

It is an amenable number.

12423545 is a deficient number, since it is larger than the sum of its proper divisors (2520079).

12423545 is an equidigital number, since it uses as much as digits as its factorization.

12423545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899.

The product of its digits is 4800, while the sum is 26.

The square root of 12423545 is about 3524.7049521910. The cubic root of 12423545 is about 231.6053101376.

Adding to 12423545 its reverse (54532421), we get a palindrome (66955966).

The spelling of 12423545 in words is "twelve million, four hundred twenty-three thousand, five hundred forty-five".