12002123 has 8 divisors (see below), whose sum is σ = 13800192. Its totient is φ = 10224936.

The previous prime is 12002093. The next prime is 12002147. The reversal of 12002123 is 32120021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12002123 - 2⁶ = 12002059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12002173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3965 + ... + 6302.

It is an arithmetic number, because the mean of its divisors is an integer number (1725024).

Almost surely, 2^12002123 is an apocalyptic number.

12002123 is a deficient number, since it is larger than the sum of its proper divisors (1798069).

12002123 is a wasteful number, since it uses less digits than its factorization.

12002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12002123 is about 3464.4080302412. The cubic root of 12002123 is about 228.9563489831.

Adding to 12002123 its reverse (32120021), we get a palindrome (44122144).

The spelling of 12002123 in words is "twelve million, two thousand, one hundred twenty-three".