2102120430 has 64 divisors (see below), whose sum is σ = 5241148416. Its totient is φ = 539168000.

The previous prime is 2102120413. The next prime is 2102120441. The reversal of 2102120430 is 340212012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75295 + ... + 99365.

It is an arithmetic number, because the mean of its divisors is an integer number (81892944).

Almost surely, 2^2102120430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102120430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620574208).

2102120430 is an abundant number, since it is smaller than the sum of its proper divisors (3139027986).

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

2102120430 is a wasteful number, since it uses less digits than its factorization.

2102120430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24193.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2102120430 is about 45848.8869003382. The cubic root of 2102120430 is about 1281.0100324572.

Adding to 2102120430 its reverse (340212012), we get a palindrome (2442332442).

The spelling of 2102120430 in words is "two billion, one hundred two million, one hundred twenty thousand, four hundred thirty".