12045145 has 32 divisors (see below), whose sum is σ = 17740800. Its totient is φ = 7667136.

The previous prime is 12045139. The next prime is 12045167. The reversal of 12045145 is 54154021.

12045145 = 1093² + 1094² + ... + 1102².

It is a cyclic number.

It is not a de Polignac number, because 12045145 - 2¹³ = 12036953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39082 + ... + 39388.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^12045145 is an apocalyptic number.

It is an amenable number.

12045145 is a deficient number, since it is larger than the sum of its proper divisors (5695655).

12045145 is a wasteful number, since it uses less digits than its factorization.

12045145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12045145 is about 3470.6116175683. The cubic root of 12045145 is about 229.2295899206.

Adding to 12045145 its reverse (54154021), we get a palindrome (66199166).

The spelling of 12045145 in words is "twelve million, forty-five thousand, one hundred forty-five".