2102542120 has 96 divisors (see below), whose sum is σ = 5466856320. Its totient is φ = 712886400.

The previous prime is 2102542097. The next prime is 2102542153. The reversal of 2102542120 is 212452012.

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 23 ways as a sum of consecutive naturals, for example, 9428329 + ... + 9428551.

It is an arithmetic number, because the mean of its divisors is an integer number (56946420).

Almost surely, 2^2102542120 is an apocalyptic number.

2102542120 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 2102542120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2733428160).

2102542120 is an abundant number, since it is smaller than the sum of its proper divisors (3364314200).

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

2102542120 is a wasteful number, since it uses less digits than its factorization.

2102542120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2102542120 is about 45853.4853637104. The cubic root of 2102542120 is about 1281.0956845439.

Adding to 2102542120 its reverse (212452012), we get a palindrome (2314994132).

The spelling of 2102542120 in words is "two billion, one hundred two million, five hundred forty-two thousand, one hundred twenty".