12144345 has 16 divisors (see below), whose sum is σ = 20276352. Its totient is φ = 6195200.

The previous prime is 12144331. The next prime is 12144347. The reversal of 12144345 is 54344121.

It is not a de Polignac number, because 12144345 - 2⁵ = 12144313 is a prime.

It is a super-3 number, since 3×12144345³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12144347) 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, 17256 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (1267272).

Almost surely, 2^12144345 is an apocalyptic number.

12144345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12144345 is a deficient number, since it is larger than the sum of its proper divisors (8132007).

12144345 is a wasteful number, since it uses less digits than its factorization.

12144345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35232.

The product of its digits is 1920, while the sum is 24.

The square root of 12144345 is about 3484.8737423327. The cubic root of 12144345 is about 229.8571576824.

Adding to 12144345 its reverse (54344121), we get a palindrome (66488466).

The spelling of 12144345 in words is "twelve million, one hundred forty-four thousand, three hundred forty-five".