12451442 has 8 divisors (see below), whose sum is σ = 18983532. Its totient is φ = 6123600.

The previous prime is 12451421. The next prime is 12451447. The reversal of 12451442 is 24415421.

It can be written as a sum of positive squares in 2 ways, for example, as 11282881 + 1168561 = 3359^2 + 1081^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12451447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50909 + ... + 51152.

Almost surely, 2^12451442 is an apocalyptic number.

12451442 is a deficient number, since it is larger than the sum of its proper divisors (6532090).

12451442 is a wasteful number, since it uses less digits than its factorization.

12451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102124.

The product of its digits is 1280, while the sum is 23.

The square root of 12451442 is about 3528.6600856416. The cubic root of 12451442 is about 231.7785366803.

Adding to 12451442 its reverse (24415421), we get a palindrome (36866863).

The spelling of 12451442 in words is "twelve million, four hundred fifty-one thousand, four hundred forty-two".