12002145 has 8 divisors (see below), whose sum is σ = 19203456. Its totient is φ = 6401136.

The previous prime is 12002093. The next prime is 12002147. The reversal of 12002145 is 54120021.

12002145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12002145 - 2¹¹ = 12000097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 800143 = 12002145 / (1 + 2 + 0 + 0 + 2 + 1 + 4 + 5).

It is not an unprimeable number, because it can be changed into a prime (12002147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400057 + ... + 400086.

It is an arithmetic number, because the mean of its divisors is an integer number (2400432).

Almost surely, 2^12002145 is an apocalyptic number.

12002145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12002145 is a deficient number, since it is larger than the sum of its proper divisors (7201311).

12002145 is an equidigital number, since it uses as much as digits as its factorization.

12002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800151.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12002145 is about 3464.4112053854. The cubic root of 12002145 is about 228.9564888760.

Adding to 12002145 its reverse (54120021), we get a palindrome (66122166).

The spelling of 12002145 in words is "twelve million, two thousand, one hundred forty-five".