1423421440223 has 4 divisors (see below), whose sum is σ = 1458139036368. Its totient is φ = 1388703844080.

The previous prime is 1423421440193. The next prime is 1423421440277. The reversal of 1423421440223 is 3220441243241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1423421440223 - 2⁶ = 1423421440159 is a prime.

It is a super-2 number, since 2×1423421440223² (a number of 25 digits) contains 22 as substring.

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 1423421440223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423421440823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17358798011 + ... + 17358798092.

It is an arithmetic number, because the mean of its divisors is an integer number (364534759092).

Almost surely, 2^{1423421440223} is an apocalyptic number.

1423421440223 is a deficient number, since it is larger than the sum of its proper divisors (34717596145).

1423421440223 is an equidigital number, since it uses as much as digits as its factorization.

1423421440223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34717596144.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1423421440223 its reverse (3220441243241), we get a palindrome (4643862683464).

The spelling of 1423421440223 in words is "one trillion, four hundred twenty-three billion, four hundred twenty-one million, four hundred forty thousand, two hundred twenty-three".