2106004 has 6 divisors (see below), whose sum is σ = 3685514. Its totient is φ = 1053000.

The previous prime is 2105993. The next prime is 2106019. The reversal of 2106004 is 4006012.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 806404 = 1140^2 + 898^2 .

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, 263247 + ... + 263254.

2^2106004 is an apocalyptic number.

It is an amenable number.

2106004 is a deficient number, since it is larger than the sum of its proper divisors (1579510).

2106004 is a wasteful number, since it uses less digits than its factorization.

2106004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526505 (or 526503 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2106004 is about 1451.2077728568. The cubic root of 2106004 is about 128.1798416030.

The spelling of 2106004 in words is "two million, one hundred six thousand, four".