2106423 has 12 divisors (see below), whose sum is σ = 3319368. Its totient is φ = 1276560.

The previous prime is 2106421. The next prime is 2106427. The reversal of 2106423 is 3246012.

It is a happy number.

2106423 is a `hidden beast` number, since 21 + 0 + 642 + 3 = 666.

It is not a de Polignac number, because 2106423 - 2¹ = 2106421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2106396 and 2106405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10540 + ... + 10737.

It is an arithmetic number, because the mean of its divisors is an integer number (276614).

2^2106423 is an apocalyptic number.

2106423 is a deficient number, since it is larger than the sum of its proper divisors (1212945).

2106423 is a wasteful number, since it uses less digits than its factorization.

2106423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21294 (or 21291 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2106423 is about 1451.3521281894. The cubic root of 2106423 is about 128.1883417122.

The spelling of 2106423 in words is "two million, one hundred six thousand, four hundred twenty-three".