20000421430 has 32 divisors (see below), whose sum is σ = 39399097248. Its totient is φ = 7249632000.

The previous prime is 20000421401. The next prime is 20000421431. The reversal of 20000421430 is 3412400002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000421431) 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, 256021 + ... + 324880.

It is an arithmetic number, because the mean of its divisors is an integer number (1231221789).

Almost surely, 2^20000421430 is an apocalyptic number.

20000421430 is a deficient number, since it is larger than the sum of its proper divisors (19398675818).

20000421430 is a wasteful number, since it uses less digits than its factorization.

20000421430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581232.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20000421430 its reverse (3412400002), we get a palindrome (23412821432).

The spelling of 20000421430 in words is "twenty billion, four hundred twenty-one thousand, four hundred thirty".