12147423 has 8 divisors (see below), whose sum is σ = 16324608. Its totient is φ = 8034264.

The previous prime is 12147397. The next prime is 12147463. The reversal of 12147423 is 32474121.

It is a happy number.

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

It is not a de Polignac number, because 12147423 - 2⁵ = 12147391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12147393 and 12147402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147463) 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, 15561 + ... + 16322.

It is an arithmetic number, because the mean of its divisors is an integer number (2040576).

Almost surely, 2^12147423 is an apocalyptic number.

12147423 is a deficient number, since it is larger than the sum of its proper divisors (4177185).

12147423 is a wasteful number, since it uses less digits than its factorization.

12147423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32013.

The product of its digits is 1344, while the sum is 24.

The square root of 12147423 is about 3485.3153372399. The cubic root of 12147423 is about 229.8765752404.

The spelling of 12147423 in words is "twelve million, one hundred forty-seven thousand, four hundred twenty-three".