424223235451 has 4 divisors (see below), whose sum is σ = 424237302112. Its totient is φ = 424209168792.

The previous prime is 424223235379. The next prime is 424223235511. The reversal of 424223235451 is 154532322424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424223235451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424223235451.

It is not an unprimeable number, because it can be changed into a prime (424223235251) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6987996 + ... + 7048441.

It is an arithmetic number, because the mean of its divisors is an integer number (106059325528).

Almost surely, 2^424223235451 is an apocalyptic number.

424223235451 is a deficient number, since it is larger than the sum of its proper divisors (14066661).

424223235451 is a wasteful number, since it uses less digits than its factorization.

424223235451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14066660.

The product of its digits is 230400, while the sum is 37.

Adding to 424223235451 its reverse (154532322424), we get a palindrome (578755557875).

The spelling of 424223235451 in words is "four hundred twenty-four billion, two hundred twenty-three million, two hundred thirty-five thousand, four hundred fifty-one".