2130004 has 6 divisors (see below), whose sum is σ = 3727514. Its totient is φ = 1065000.

The previous prime is 2130001. The next prime is 2130013. The reversal of 2130004 is 4000312.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 562500 = 1252^2 + 750^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266247 + ... + 266254.

2^2130004 is an apocalyptic number.

It is an amenable number.

2130004 is a deficient number, since it is larger than the sum of its proper divisors (1597510).

2130004 is a wasteful number, since it uses less digits than its factorization.

2130004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532505 (or 532503 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2130004 is about 1459.4533223094. The cubic root of 2130004 is about 128.6649156637.

Adding to 2130004 its reverse (4000312), we get a palindrome (6130316).

The spelling of 2130004 in words is "two million, one hundred thirty thousand, four".