20134034420 has 24 divisors (see below), whose sum is σ = 42326159904. Its totient is φ = 8045101856.

The previous prime is 20134034419. The next prime is 20134034429. The reversal of 20134034420 is 2443043102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134034429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512582 + ... + 550461.

It is an arithmetic number, because the mean of its divisors is an integer number (1763589996).

Almost surely, 2^20134034420 is an apocalyptic number.

20134034420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134034420 is an abundant number, since it is smaller than the sum of its proper divisors (22192125484).

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

20134034420 is a wasteful number, since it uses less digits than its factorization.

20134034420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063999 (or 1063997 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20134034420 its reverse (2443043102), we get a palindrome (22577077522).

The spelling of 20134034420 in words is "twenty billion, one hundred thirty-four million, thirty-four thousand, four hundred twenty".