2123004 has 48 divisors (see below), whose sum is σ = 5519360. Its totient is φ = 630720.

The previous prime is 2122979. The next prime is 2123027. The reversal of 2123004 is 4003212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4617 + ... + 5055.

2^2123004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2759680).

2123004 is an abundant number, since it is smaller than the sum of its proper divisors (3396356).

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

2123004 is a wasteful number, since it uses less digits than its factorization.

2123004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2123004 is about 1457.0531905185. The cubic root of 2123004 is about 128.5238137619.

Adding to 2123004 its reverse (4003212), we get a palindrome (6126216).

The spelling of 2123004 in words is "two million, one hundred twenty-three thousand, four".