2121004 has 6 divisors (see below), whose sum is σ = 3711764. Its totient is φ = 1060500.

The previous prime is 2120981. The next prime is 2121011. The reversal of 2121004 is 4001212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265122 + ... + 265129.

2^2121004 is an apocalyptic number.

It is an amenable number.

2121004 is a deficient number, since it is larger than the sum of its proper divisors (1590760).

2121004 is a wasteful number, since it uses less digits than its factorization.

2121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530255 (or 530253 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2121004 is about 1456.3667120612. The cubic root of 2121004 is about 128.4834419762.

Adding to 2121004 its reverse (4001212), we get a palindrome (6122216).

It can be divided in two parts, 21 and 21004, that added together give a square (21025 = 145²).

The spelling of 2121004 in words is "two million, one hundred twenty-one thousand, four".