12464436420442 has 4 divisors (see below), whose sum is σ = 18696654630666. Its totient is φ = 6232218210220.

The previous prime is 12464436420437. The next prime is 12464436420461. The reversal of 12464436420442 is 24402463446421.

It is a happy number.

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., 12462022565281 + 2413855161 = 3530159^2 + 49131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12464436420392 and 12464436420401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3116109105109 + ... + 3116109105112.

Almost surely, 2^{12464436420442} is an apocalyptic number.

12464436420442 is a deficient number, since it is larger than the sum of its proper divisors (6232218210224).

12464436420442 is an equidigital number, since it uses as much as digits as its factorization.

12464436420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232218210223.

The product of its (nonzero) digits is 3538944, while the sum is 46.

Adding to 12464436420442 its reverse (24402463446421), we get a palindrome (36866899866863).

The spelling of 12464436420442 in words is "twelve trillion, four hundred sixty-four billion, four hundred thirty-six million, four hundred twenty thousand, four hundred forty-two".