12154345 has 16 divisors (see below), whose sum is σ = 16750080. Its totient is φ = 8293824.

The previous prime is 12154339. The next prime is 12154349. The reversal of 12154345 is 54345121.

It is a happy number.

It is not a de Polignac number, because 12154345 - 2⁵ = 12154313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12154349) 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, 7639 + ... + 9091.

It is an arithmetic number, because the mean of its divisors is an integer number (1046880).

Almost surely, 2^12154345 is an apocalyptic number.

It is an amenable number.

12154345 is a deficient number, since it is larger than the sum of its proper divisors (4595735).

12154345 is a wasteful number, since it uses less digits than its factorization.

12154345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704.

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

The square root of 12154345 is about 3486.3082193059. The cubic root of 12154345 is about 229.9202306864.

Adding to 12154345 its reverse (54345121), we get a palindrome (66499466).

The spelling of 12154345 in words is "twelve million, one hundred fifty-four thousand, three hundred forty-five".