2105040030 has 32 divisors (see below), whose sum is σ = 5053394304. Its totient is φ = 561199776.

The previous prime is 2105040013. The next prime is 2105040037. The reversal of 2105040030 is 300405012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 2105039991 and 2105040009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105040037) 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 15 ways as a sum of consecutive naturals, for example, 164317 + ... + 176663.

It is an arithmetic number, because the mean of its divisors is an integer number (157918572).

Almost surely, 2^2105040030 is an apocalyptic number.

2105040030 is an abundant number, since it is smaller than the sum of its proper divisors (2948354274).

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

2105040030 is a wasteful number, since it uses less digits than its factorization.

2105040030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18040.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2105040030 is about 45880.7152298218. The cubic root of 2105040030 is about 1281.6028159281.

Adding to 2105040030 its reverse (300405012), we get a palindrome (2405445042).

The spelling of 2105040030 in words is "two billion, one hundred five million, forty thousand, thirty".