20140304421 has 4 divisors (see below), whose sum is σ = 26853739232. Its totient is φ = 13426869612.

The previous prime is 20140304411. The next prime is 20140304441. The reversal of 20140304421 is 12440304102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20140304421 - 2⁷ = 20140304293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140304411) 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, 3356717401 + ... + 3356717406.

It is an arithmetic number, because the mean of its divisors is an integer number (6713434808).

Almost surely, 2^20140304421 is an apocalyptic number.

It is an amenable number.

20140304421 is a deficient number, since it is larger than the sum of its proper divisors (6713434811).

20140304421 is an equidigital number, since it uses as much as digits as its factorization.

20140304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713434810.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20140304421 its reverse (12440304102), we get a palindrome (32580608523).

The spelling of 20140304421 in words is "twenty billion, one hundred forty million, three hundred four thousand, four hundred twenty-one".