12142442 has 8 divisors (see below), whose sum is σ = 19614756. Its totient is φ = 5604192.

The previous prime is 12142439. The next prime is 12142451. The reversal of 12142442 is 24424121.

It can be written as a sum of positive squares in 2 ways, for example, as 9006001 + 3136441 = 3001^2 + 1771^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233483 + ... + 233534.

Almost surely, 2^12142442 is an apocalyptic number.

12142442 is a deficient number, since it is larger than the sum of its proper divisors (7472314).

12142442 is a wasteful number, since it uses less digits than its factorization.

12142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467032.

The product of its digits is 512, while the sum is 20.

The square root of 12142442 is about 3484.6006944842. The cubic root of 12142442 is about 229.8451509687.

Adding to 12142442 its reverse (24424121), we get a palindrome (36566563).

The spelling of 12142442 in words is "twelve million, one hundred forty-two thousand, four hundred forty-two".