2105140404 has 12 divisors (see below), whose sum is σ = 4911994304. Its totient is φ = 701713464.

The previous prime is 2105140381. The next prime is 2105140409. The reversal of 2105140404 is 4040415012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2105140404² = 8863232241106566432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105140409) 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 3 ways as a sum of consecutive naturals, for example, 87714172 + ... + 87714195.

Almost surely, 2^2105140404 is an apocalyptic number.

It is an amenable number.

2105140404 is an abundant number, since it is smaller than the sum of its proper divisors (2806853900).

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

2105140404 is a wasteful number, since it uses less digits than its factorization.

2105140404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175428374 (or 175428372 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2105140404 is about 45881.8090750572. The cubic root of 2105140404 is about 1281.6231857001.

Adding to 2105140404 its reverse (4040415012), we get a palindrome (6145555416).

The spelling of 2105140404 in words is "two billion, one hundred five million, one hundred forty thousand, four hundred four".