20414203421 has 16 divisors (see below), whose sum is σ = 22946726400. Its totient is φ = 18070516800.

The previous prime is 20414203409. The next prime is 20414203429. The reversal of 20414203421 is 12430241402.

It is a cyclic number.

It is not a de Polignac number, because 20414203421 - 2¹⁴ = 20414187037 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 (20414203429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580490 + ... + 614651.

It is an arithmetic number, because the mean of its divisors is an integer number (1434170400).

Almost surely, 2^20414203421 is an apocalyptic number.

It is an amenable number.

20414203421 is a deficient number, since it is larger than the sum of its proper divisors (2532522979).

20414203421 is a wasteful number, since it uses less digits than its factorization.

20414203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195220.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20414203421 its reverse (12430241402), we get a palindrome (32844444823).

The spelling of 20414203421 in words is "twenty billion, four hundred fourteen million, two hundred three thousand, four hundred twenty-one".