12455401442 has 24 divisors (see below), whose sum is σ = 20724419100. Its totient is φ = 5609593440.

The previous prime is 12455401423. The next prime is 12455401463. The reversal of 12455401442 is 24410455421.

It can be written as a sum of positive squares in 2 ways, for example, as 12248070241 + 207331201 = 110671^2 + 14399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12455401399 and 12455401408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209717 + ... + 262472.

Almost surely, 2^12455401442 is an apocalyptic number.

12455401442 is a deficient number, since it is larger than the sum of its proper divisors (8269017658).

12455401442 is a wasteful number, since it uses less digits than its factorization.

12455401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472322 (or 472311 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 12455401442 its reverse (24410455421), we get a palindrome (36865856863).

The spelling of 12455401442 in words is "twelve billion, four hundred fifty-five million, four hundred one thousand, four hundred forty-two".