2102840103 has 32 divisors (see below), whose sum is σ = 3534999552. Its totient is φ = 1082131200.

The previous prime is 2102840057. The next prime is 2102840111. The reversal of 2102840103 is 3010482012.

It is not a de Polignac number, because 2102840103 - 2⁶ = 2102840039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2102840103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102840123) by changing a digit.

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, 82743 + ... + 105128.

It is an arithmetic number, because the mean of its divisors is an integer number (110468736).

Almost surely, 2^2102840103 is an apocalyptic number.

2102840103 is a deficient number, since it is larger than the sum of its proper divisors (1432159449).

2102840103 is a wasteful number, since it uses less digits than its factorization.

2102840103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187935.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2102840103 is about 45856.7345435760. The cubic root of 2102840103 is about 1281.1562028246.

The spelling of 2102840103 in words is "two billion, one hundred two million, eight hundred forty thousand, one hundred three".