12240342 has 32 divisors (see below), whose sum is σ = 27538560. Its totient is φ = 4029480.

The previous prime is 12240341. The next prime is 12240343. The reversal of 12240342 is 24304221.

It is an interprime number because it is at equal distance from previous prime (12240341) and next prime (12240343).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117 + ... + 5847.

It is an arithmetic number, because the mean of its divisors is an integer number (860580).

Almost surely, 2^12240342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12240342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13769280).

12240342 is an abundant number, since it is smaller than the sum of its proper divisors (15298218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12240342 is a wasteful number, since it uses less digits than its factorization.

12240342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12240342 is about 3498.6200136625. The cubic root of 12240342 is about 230.4612169147.

Adding to 12240342 its reverse (24304221), we get a palindrome (36544563).

The spelling of 12240342 in words is "twelve million, two hundred forty thousand, three hundred forty-two".