20430102140 has 96 divisors (see below), whose sum is σ = 50091955200. Its totient is φ = 6996343872.

The previous prime is 20430102113. The next prime is 20430102167. The reversal of 20430102140 is 4120103402.

It is an interprime number because it is at equal distance from previous prime (20430102113) and next prime (20430102167).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9788177 + ... + 9790263.

It is an arithmetic number, because the mean of its divisors is an integer number (521791200).

Almost surely, 2^20430102140 is an apocalyptic number.

20430102140 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 20430102140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25045977600).

20430102140 is an abundant number, since it is smaller than the sum of its proper divisors (29661853060).

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

20430102140 is a wasteful number, since it uses less digits than its factorization.

20430102140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544 (or 3528 counting only the distinct ones).

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

Adding to 20430102140 its reverse (4120103402), we get a palindrome (24550205542).

The spelling of 20430102140 in words is "twenty billion, four hundred thirty million, one hundred two thousand, one hundred forty".