12240542 has 8 divisors (see below), whose sum is σ = 18619632. Its totient is φ = 6034000.

The previous prime is 12240511. The next prime is 12240559. The reversal of 12240542 is 24504221.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42959 + ... + 43242.

It is an arithmetic number, because the mean of its divisors is an integer number (2327454).

Almost surely, 2^12240542 is an apocalyptic number.

12240542 is a deficient number, since it is larger than the sum of its proper divisors (6379090).

12240542 is an equidigital number, since it uses as much as digits as its factorization.

12240542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86274.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 12240542 is about 3498.6485962440. The cubic root of 12240542 is about 230.4624721082.

Adding to 12240542 its reverse (24504221), we get a palindrome (36744763).

The spelling of 12240542 in words is "twelve million, two hundred forty thousand, five hundred forty-two".