20034421423 has 4 divisors (see below), whose sum is σ = 20905483248. Its totient is φ = 19163359600.

The previous prime is 20034421399. The next prime is 20034421439. The reversal of 20034421423 is 32412443002.

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 20034421423 - 2⁹ = 20034420911 is a prime.

It is a super-2 number, since 2×20034421423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034421493) 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, 435530878 + ... + 435530923.

It is an arithmetic number, because the mean of its divisors is an integer number (5226370812).

Almost surely, 2^20034421423 is an apocalyptic number.

20034421423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20034421423 is a deficient number, since it is larger than the sum of its proper divisors (871061825).

20034421423 is an equidigital number, since it uses as much as digits as its factorization.

20034421423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871061824.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20034421423 its reverse (32412443002), we get a palindrome (52446864425).

The spelling of 20034421423 in words is "twenty billion, thirty-four million, four hundred twenty-one thousand, four hundred twenty-three".