2104042878 has 80 divisors (see below), whose sum is σ = 5396433504. Its totient is φ = 600229440.

The previous prime is 2104042877. The next prime is 2104042883. The reversal of 2104042878 is 8782404012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104042877) 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 39 ways as a sum of consecutive naturals, for example, 1129668 + ... + 1131528.

Almost surely, 2^2104042878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2104042878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698216752).

2104042878 is an abundant number, since it is smaller than the sum of its proper divisors (3292390626).

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

2104042878 is a wasteful number, since it uses less digits than its factorization.

2104042878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2870 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 2104042878 is about 45869.8471547486. The cubic root of 2104042878 is about 1281.4004199905.

The spelling of 2104042878 in words is "two billion, one hundred four million, forty-two thousand, eight hundred seventy-eight".