12023534 has 4 divisors (see below), whose sum is σ = 18035304. Its totient is φ = 6011766.

The previous prime is 12023513. The next prime is 12023569. The reversal of 12023534 is 43532021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005882 + ... + 3005885.

It is an arithmetic number, because the mean of its divisors is an integer number (4508826).

Almost surely, 2^12023534 is an apocalyptic number.

12023534 is a deficient number, since it is larger than the sum of its proper divisors (6011770).

12023534 is an equidigital number, since it uses as much as digits as its factorization.

12023534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011769.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12023534 is about 3467.4967916351. The cubic root of 12023534 is about 229.0924158055.

Adding to 12023534 its reverse (43532021), we get a palindrome (55555555).

The spelling of 12023534 in words is "twelve million, twenty-three thousand, five hundred thirty-four".