12134345 has 8 divisors (see below), whose sum is σ = 15417864. Its totient is φ = 9136384.

The previous prime is 12134341. The next prime is 12134347. The reversal of 12134345 is 54343121.

It can be written as a sum of positive squares in 4 ways, for example, as 1290496 + 10843849 = 1136^2 + 3293^2 .

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 12134345 - 2² = 12134341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12134345.

It is not an unprimeable number, because it can be changed into a prime (12134341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71294 + ... + 71463.

It is an arithmetic number, because the mean of its divisors is an integer number (1927233).

Almost surely, 2^12134345 is an apocalyptic number.

It is an amenable number.

12134345 is a deficient number, since it is larger than the sum of its proper divisors (3283519).

12134345 is a wasteful number, since it uses less digits than its factorization.

12134345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142779.

The product of its digits is 1440, while the sum is 23.

The square root of 12134345 is about 3483.4386746432. The cubic root of 12134345 is about 229.7940500449.

Adding to 12134345 its reverse (54343121), we get a palindrome (66477466).

The spelling of 12134345 in words is "twelve million, one hundred thirty-four thousand, three hundred forty-five".