20134421040 has 160 divisors (see below), whose sum is σ = 64351256256. Its totient is φ = 5204459520.

The previous prime is 20134421033. The next prime is 20134421059. The reversal of 20134421040 is 4012443102.

It is a junction number, because it is equal to n+sod(n) for n = 20134420998 and 20134421016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1538364 + ... + 1551396.

Almost surely, 2^20134421040 is an apocalyptic number.

20134421040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20134421040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175628128).

20134421040 is an abundant number, since it is smaller than the sum of its proper divisors (44216835216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20134421040 is a wasteful number, since it uses less digits than its factorization.

20134421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247 (or 13241 counting only the distinct ones).

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

Adding to 20134421040 its reverse (4012443102), we get a palindrome (24146864142).

The spelling of 20134421040 in words is "twenty billion, one hundred thirty-four million, four hundred twenty-one thousand, forty".