12342545 has 8 divisors (see below), whose sum is σ = 15321960. Its totient is φ = 9533440.

The previous prime is 12342541. The next prime is 12342553. The reversal of 12342545 is 54524321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3810304 + 8532241 = 1952^2 + 2921^2 .

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

It is not a de Polignac number, because 12342545 - 2² = 12342541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12342541) by changing a digit.

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, 42416 + ... + 42705.

It is an arithmetic number, because the mean of its divisors is an integer number (1915245).

Almost surely, 2^12342545 is an apocalyptic number.

It is an amenable number.

12342545 is a deficient number, since it is larger than the sum of its proper divisors (2979415).

12342545 is an equidigital number, since it uses as much as digits as its factorization.

12342545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85155.

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

The square root of 12342545 is about 3513.1958385493. The cubic root of 12342545 is about 231.1008661033.

Adding to 12342545 its reverse (54524321), we get a palindrome (66866866).

The spelling of 12342545 in words is "twelve million, three hundred forty-two thousand, five hundred forty-five".