2120244453 has 6 divisors (see below), whose sum is σ = 3062575334. Its totient is φ = 1413496296.

The previous prime is 2120244431. The next prime is 2120244479. The reversal of 2120244453 is 3544420212.

2120244453 is a `hidden beast` number, since 2 + 1 + 202 + 4 + 4 + 453 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1988981604 + 131262849 = 44598^2 + 11457^2 .

It is not a de Polignac number, because 2120244453 - 2⁵ = 2120244421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120244053) 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 in 5 ways as a sum of consecutive naturals, for example, 117791350 + ... + 117791367.

Almost surely, 2^2120244453 is an apocalyptic number.

It is an amenable number.

2120244453 is a deficient number, since it is larger than the sum of its proper divisors (942330881).

2120244453 is a wasteful number, since it uses less digits than its factorization.

2120244453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235582723 (or 235582720 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2120244453 is about 46046.1122463124. The cubic root of 2120244453 is about 1284.6810319253.

Adding to 2120244453 its reverse (3544420212), we get a palindrome (5664664665).

The spelling of 2120244453 in words is "two billion, one hundred twenty million, two hundred forty-four thousand, four hundred fifty-three".