12240506 has 4 divisors (see below), whose sum is σ = 18360762. Its totient is φ = 6120252.

The previous prime is 12240469. The next prime is 12240511. The reversal of 12240506 is 60504221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60504221 = 1523 ⋅39727.

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 3591025 = 2941^2 + 1895^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060125 + ... + 3060128.

Almost surely, 2^12240506 is an apocalyptic number.

12240506 is a deficient number, since it is larger than the sum of its proper divisors (6120256).

12240506 is an equidigital number, since it uses as much as digits as its factorization.

12240506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120255.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12240506 is about 3498.6434513966. The cubic root of 12240506 is about 230.4622461744.

Adding to 12240506 its reverse (60504221), we get a palindrome (72744727).

It can be divided in two parts, 12240 and 506, that multiplied together give a triangular number (6193440 = T₃₅₁₉).

The spelling of 12240506 in words is "twelve million, two hundred forty thousand, five hundred six".