2112406 has 4 divisors (see below), whose sum is σ = 3168612. Its totient is φ = 1056202.

The previous prime is 2112353. The next prime is 2112413. The reversal of 2112406 is 6042112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2112406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528100 + ... + 528103.

It is an arithmetic number, because the mean of its divisors is an integer number (792153).

2^2112406 is an apocalyptic number.

2112406 is a deficient number, since it is larger than the sum of its proper divisors (1056206).

2112406 is a wasteful number, since it uses less digits than its factorization.

2112406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056205.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2112406 is about 1453.4118480321. The cubic root of 2112406 is about 128.3095940048.

Adding to 2112406 its reverse (6042112), we get a palindrome (8154518).

The spelling of 2112406 in words is "two million, one hundred twelve thousand, four hundred six".