2105403 has 8 divisors (see below), whose sum is σ = 2814528. Its totient is φ = 1399944.

The previous prime is 2105381. The next prime is 2105407. The reversal of 2105403 is 3045012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2105403 - 2¹³ = 2097211 is a prime.

2105403 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2105407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (351816).

2^2105403 is an apocalyptic number.

2105403 is a deficient number, since it is larger than the sum of its proper divisors (709125).

2105403 is a wasteful number, since it uses less digits than its factorization.

2105403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833.

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

The square root of 2105403 is about 1451.0006891797. Note that the first 3 decimals coincide. The cubic root of 2105403 is about 128.1676473536.

The spelling of 2105403 in words is "two million, one hundred five thousand, four hundred three".