12090023 has 8 divisors (see below), whose sum is σ = 13883520. Its totient is φ = 10412280.

The previous prime is 12090011. The next prime is 12090053. The reversal of 12090023 is 32009021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12090023 is a prime.

It is a super-2 number, since 2×12090023² = 292337312281058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12089983 and 12090010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090053) 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, 28715 + ... + 29132.

It is an arithmetic number, because the mean of its divisors is an integer number (1735440).

Almost surely, 2^12090023 is an apocalyptic number.

12090023 is a deficient number, since it is larger than the sum of its proper divisors (1793497).

12090023 is a wasteful number, since it uses less digits than its factorization.

12090023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57877.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 12090023 is about 3477.0710375257. The cubic root of 12090023 is about 229.5139262137.

Adding to 12090023 its reverse (32009021), we get a palindrome (44099044).

The spelling of 12090023 in words is "twelve million, ninety thousand, twenty-three".