12031442 has 4 divisors (see below), whose sum is σ = 18047166. Its totient is φ = 6015720.

The previous prime is 12031417. The next prime is 12031471. The reversal of 12031442 is 24413021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 546121 = 3389^2 + 739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12031442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3007859 + ... + 3007862.

Almost surely, 2^12031442 is an apocalyptic number.

12031442 is a deficient number, since it is larger than the sum of its proper divisors (6015724).

12031442 is an equidigital number, since it uses as much as digits as its factorization.

12031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015723.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12031442 is about 3468.6369080663. The cubic root of 12031442 is about 229.1426302650.

Adding to 12031442 its reverse (24413021), we get a palindrome (36444463).

The spelling of 12031442 in words is "twelve million, thirty-one thousand, four hundred forty-two".