2105972 has 24 divisors (see below), whose sum is σ = 4197312. Its totient is φ = 915200.

The previous prime is 2105969. The next prime is 2105993. The reversal of 2105972 is 2795012.

It is a congruent number.

It is an unprimeable number.

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, 29 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (174888).

2^2105972 is an apocalyptic number.

2105972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2105972 is a deficient number, since it is larger than the sum of its proper divisors (2091340).

2105972 is a wasteful number, since it uses less digits than its factorization.

2105972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2105972 is about 1451.1967475156. The cubic root of 2105972 is about 128.1791923836.

The spelling of 2105972 in words is "two million, one hundred five thousand, nine hundred seventy-two".