2106138 has 8 divisors (see below), whose sum is σ = 4212288. Its totient is φ = 702044.

The previous prime is 2106107. The next prime is 2106149. The reversal of 2106138 is 8316012.

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

2106138 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175506 + ... + 175517.

It is an arithmetic number, because the mean of its divisors is an integer number (526536).

2^2106138 is an apocalyptic number.

2106138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2106138 is a wasteful number, since it uses less digits than its factorization.

2106138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351028.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2106138 is about 1451.2539405631. The cubic root of 2106138 is about 128.1825601376.

The spelling of 2106138 in words is "two million, one hundred six thousand, one hundred thirty-eight".