20143420100 has 72 divisors (see below), whose sum is σ = 44500485120. Its totient is φ = 7912183680.

The previous prime is 20143420091. The next prime is 20143420109. The reversal of 20143420100 is 102434102.

It is an interprime number because it is at equal distance from previous prime (20143420091) and next prime (20143420109).

It is not an unprimeable number, because it can be changed into a prime (20143420109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9810674 + ... + 9812726.

Almost surely, 2^20143420100 is an apocalyptic number.

20143420100 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 20143420100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22250242560).

20143420100 is an abundant number, since it is smaller than the sum of its proper divisors (24357065020).

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

20143420100 is a wasteful number, since it uses less digits than its factorization.

20143420100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3782 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20143420100 its reverse (102434102), we get a palindrome (20245854202).

The spelling of 20143420100 in words is "twenty billion, one hundred forty-three million, four hundred twenty thousand, one hundred".