2120453 has 2 divisors, whose sum is σ = 2120454. Its totient is φ = 2120452.

The previous prime is 2120429. The next prime is 2120473. The reversal of 2120453 is 3540212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1682209 + 438244 = 1297^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120453 - 2¹² = 2116357 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060226 + 1060227.

It is an arithmetic number, because the mean of its divisors is an integer number (1060227).

2^2120453 is an apocalyptic number.

It is an amenable number.

2120453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120453 is an equidigital number, since it uses as much as digits as its factorization.

2120453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2120453 is about 1456.1775303856. The cubic root of 2120453 is about 128.4723150904.

Adding to 2120453 its reverse (3540212), we get a palindrome (5660665).

The spelling of 2120453 in words is "two million, one hundred twenty thousand, four hundred fifty-three".