2140421204 has 6 divisors (see below), whose sum is σ = 3745737114. Its totient is φ = 1070210600.

The previous prime is 2140421203. The next prime is 2140421237. The reversal of 2140421204 is 4021240412.

It can be written as a sum of positive squares in only one way, i.e., 2132592400 + 7828804 = 46180^2 + 2798^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140421201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267552647 + ... + 267552654.

It is an arithmetic number, because the mean of its divisors is an integer number (624289519).

Almost surely, 2^2140421204 is an apocalyptic number.

It is an amenable number.

2140421204 is a deficient number, since it is larger than the sum of its proper divisors (1605315910).

2140421204 is a wasteful number, since it uses less digits than its factorization.

2140421204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535105305 (or 535105303 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2140421204 is about 46264.6863601170. The cubic root of 2140421204 is about 1288.7432834470.

Adding to 2140421204 its reverse (4021240412), we get a palindrome (6161661616).

The spelling of 2140421204 in words is "two billion, one hundred forty million, four hundred twenty-one thousand, two hundred four".