12421342454 has 16 divisors (see below), whose sum is σ = 20029939200. Its totient is φ = 5758605864.

The previous prime is 12421342429. The next prime is 12421342463. The reversal of 12421342454 is 45424312421.

It is a self number, because there is not a number n which added to its sum of digits gives 12421342454.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3475634 + ... + 3479205.

It is an arithmetic number, because the mean of its divisors is an integer number (1251871200).

Almost surely, 2^12421342454 is an apocalyptic number.

12421342454 is a deficient number, since it is larger than the sum of its proper divisors (7608596746).

12421342454 is a wasteful number, since it uses less digits than its factorization.

12421342454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954907.

The product of its digits is 30720, while the sum is 32.

Adding to 12421342454 its reverse (45424312421), we get a palindrome (57845654875).

The spelling of 12421342454 in words is "twelve billion, four hundred twenty-one million, three hundred forty-two thousand, four hundred fifty-four".