2105456 has 10 divisors (see below), whose sum is σ = 4079352. Its totient is φ = 1052720.

The previous prime is 2105449. The next prime is 2105483. The reversal of 2105456 is 6545012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65780 + ... + 65811.

2^2105456 is an apocalyptic number.

It is an amenable number.

2105456 is a deficient number, since it is larger than the sum of its proper divisors (1973896).

2105456 is a wasteful number, since it uses less digits than its factorization.

2105456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131599 (or 131593 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2105456 is about 1451.0189523228. The cubic root of 2105456 is about 128.1687228133.

The spelling of 2105456 in words is "two million, one hundred five thousand, four hundred fifty-six".