1421043423 has 8 divisors (see below), whose sum is σ = 1945933488. Its totient is φ = 921757824.

The previous prime is 1421043391. The next prime is 1421043443. The reversal of 1421043423 is 3243401241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1421043423 - 2⁵ = 1421043391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421043393 and 1421043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421043443) by changing a digit.

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, 6400986 + ... + 6401207.

It is an arithmetic number, because the mean of its divisors is an integer number (243241686).

Almost surely, 2^1421043423 is an apocalyptic number.

1421043423 is a deficient number, since it is larger than the sum of its proper divisors (524890065).

1421043423 is a wasteful number, since it uses less digits than its factorization.

1421043423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12802233.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1421043423 is about 37696.7296061608. The cubic root of 1421043423 is about 1124.2661018860.

Adding to 1421043423 its reverse (3243401241), we get a palindrome (4664444664).

The spelling of 1421043423 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred twenty-three".