2101004 has 24 divisors (see below), whose sum is σ = 3937248. Its totient is φ = 978560.

The previous prime is 2101003. The next prime is 2101007. The reversal of 2101004 is 4001012.

It is a junction number, because it is equal to n+sod(n) for n = 2100982 and 2101000.

It is not an unprimeable number, because it can be changed into a prime (2101003) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3494 + ... + 4050.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2^2101004 is an apocalyptic number.

It is an amenable number.

2101004 is a deficient number, since it is larger than the sum of its proper divisors (1836244).

2101004 is a wasteful number, since it uses less digits than its factorization.

2101004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2101004 is about 1449.4840461350. The cubic root of 2101004 is about 128.0783212073.

Adding to 2101004 its reverse (4001012), we get a palindrome (6102016).

The spelling of 2101004 in words is "two million, one hundred one thousand, four".