2102140404 has 192 divisors, whose sum is σ = 6773760000. Its totient is φ = 548954496.

The previous prime is 2102140393. The next prime is 2102140409. The reversal of 2102140404 is 4040412012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102140409) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1050597 + ... + 1052595.

It is an arithmetic number, because the mean of its divisors is an integer number (35280000).

Almost surely, 2^2102140404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102140404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386880000).

2102140404 is an abundant number, since it is smaller than the sum of its proper divisors (4671619596).

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

2102140404 is a wasteful number, since it uses less digits than its factorization.

2102140404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2102140404 is about 45849.1047240838. The cubic root of 2102140404 is about 1281.0140897594.

Adding to 2102140404 its reverse (4040412012), we get a palindrome (6142552416).

It can be divided in two parts, 21021 and 40404, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 2102140404 in words is "two billion, one hundred two million, one hundred forty thousand, four hundred four".