2105722 has 8 divisors (see below), whose sum is σ = 3344436. Its totient is φ = 990912.

The previous prime is 2105717. The next prime is 2105729. The reversal of 2105722 is 2275012.

It can be written as a sum of positive squares in 2 ways, for example, as 2076481 + 29241 = 1441^2 + 171^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2105722.

It is not an unprimeable number, because it can be changed into a prime (2105729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30933 + ... + 31000.

2^2105722 is an apocalyptic number.

2105722 is a deficient number, since it is larger than the sum of its proper divisors (1238714).

2105722 is a wasteful number, since it uses less digits than its factorization.

2105722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61952.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 2105722 is about 1451.1106091542. The cubic root of 2105722 is about 128.1741201310.

The spelling of 2105722 in words is "two million, one hundred five thousand, seven hundred twenty-two".