2106154 has 8 divisors (see below), whose sum is σ = 3268260. Its totient is φ = 1016736.

The previous prime is 2106149. The next prime is 2106173. The reversal of 2106154 is 4516012.

It can be written as a sum of positive squares in 2 ways, for example, as 2024929 + 81225 = 1423^2 + 285^2 .

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

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, 18099 + ... + 18214.

2^2106154 is an apocalyptic number.

2106154 is a deficient number, since it is larger than the sum of its proper divisors (1162106).

2106154 is a wasteful number, since it uses less digits than its factorization.

2106154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36344.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2106154 is about 1451.2594530269. The cubic root of 2106154 is about 128.1828847311.

It can be divided in two parts, 21061 and 54, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 2106154 in words is "two million, one hundred six thousand, one hundred fifty-four".