2126906 has 4 divisors (see below), whose sum is σ = 3190362. Its totient is φ = 1063452.

The previous prime is 2126903. The next prime is 2126911. The reversal of 2126906 is 6096212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 152881 = 1405^2 + 391^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2126903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531725 + ... + 531728.

2^2126906 is an apocalyptic number.

2126906 is a deficient number, since it is larger than the sum of its proper divisors (1063456).

2126906 is a wasteful number, since it uses less digits than its factorization.

2126906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063455.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2126906 is about 1458.3915797892. The cubic root of 2126906 is about 128.6025061853.

The spelling of 2126906 in words is "two million, one hundred twenty-six thousand, nine hundred six".