12000045 has 16 divisors (see below), whose sum is σ = 20329920. Its totient is φ = 6023424.

The previous prime is 12000029. The next prime is 12000073. The reversal of 12000045 is 54000021.

It is not a de Polignac number, because 12000045 - 2⁴ = 12000029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23275 + ... + 23784.

It is an arithmetic number, because the mean of its divisors is an integer number (1270620).

Almost surely, 2^12000045 is an apocalyptic number.

12000045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12000045 is a deficient number, since it is larger than the sum of its proper divisors (8329875).

12000045 is a wasteful number, since it uses less digits than its factorization.

12000045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47084.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 12000045 is about 3464.1081103222. The cubic root of 12000045 is about 228.9431346889.

Adding to 12000045 its reverse (54000021), we get a palindrome (66000066).

The spelling of 12000045 in words is "twelve million, forty-five", and thus it is an aban number and an uban number.