2103406 has 8 divisors (see below), whose sum is σ = 3184920. Its totient is φ = 1041768.

The previous prime is 2103403. The next prime is 2103407. The reversal of 2103406 is 6043012.

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 2103406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103403) 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, 4701 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (398115).

2^2103406 is an apocalyptic number.

2103406 is a deficient number, since it is larger than the sum of its proper divisors (1081514).

2103406 is a wasteful number, since it uses less digits than its factorization.

2103406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2103406 is about 1450.3123801444. The cubic root of 2103406 is about 128.1271116844.

Adding to 2103406 its reverse (6043012), we get a palindrome (8146418).

The spelling of 2103406 in words is "two million, one hundred three thousand, four hundred six".