2105240 has 16 divisors (see below), whose sum is σ = 4736880. Its totient is φ = 842080.

The previous prime is 2105231. The next prime is 2105251. The reversal of 2105240 is 425012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26276 + ... + 26355.

It is an arithmetic number, because the mean of its divisors is an integer number (296055).

2^2105240 is an apocalyptic number.

2105240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105240 is an abundant number, since it is smaller than the sum of its proper divisors (2631640).

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

2105240 is a wasteful number, since it uses less digits than its factorization.

2105240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52642 (or 52638 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2105240 is about 1450.9445199593. The cubic root of 2105240 is about 128.1643396946.

The spelling of 2105240 in words is "two million, one hundred five thousand, two hundred forty".