12331242 has 144 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 3024000.

The previous prime is 12331237. The next prime is 12331301. The reversal of 12331242 is 24213321.

12331242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 300742 + ... + 300782.

It is an arithmetic number, because the mean of its divisors is an integer number (248976).

Almost surely, 2^12331242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12331242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17926272).

12331242 is an abundant number, since it is smaller than the sum of its proper divisors (23521302).

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

12331242 is a wasteful number, since it uses less digits than its factorization.

12331242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 95 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12331242 is about 3511.5868207977. The cubic root of 12331242 is about 231.0302990560.

Adding to 12331242 its reverse (24213321), we get a palindrome (36544563).

The spelling of 12331242 in words is "twelve million, three hundred thirty-one thousand, two hundred forty-two".