20431420104 has 128 divisors (see below), whose sum is σ = 52849843200. Its totient is φ = 6579260160.

The previous prime is 20431420049. The next prime is 20431420127. The reversal of 20431420104 is 40102413402.

It is a super-2 number, since 2×20431420104² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30909534 + ... + 30910194.

It is an arithmetic number, because the mean of its divisors is an integer number (412889400).

Almost surely, 2^20431420104 is an apocalyptic number.

20431420104 is a gapful number since it is divisible by the number (24) 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 20431420104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26424921600).

20431420104 is an abundant number, since it is smaller than the sum of its proper divisors (32418423096).

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

20431420104 is a wasteful number, since it uses less digits than its factorization.

20431420104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1071 counting only the distinct ones).

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

Adding to 20431420104 its reverse (40102413402), we get a palindrome (60533833506).

The spelling of 20431420104 in words is "twenty billion, four hundred thirty-one million, four hundred twenty thousand, one hundred four".