2143021453 has 2 divisors, whose sum is σ = 2143021454. Its totient is φ = 2143021452.

The previous prime is 2143021429. The next prime is 2143021459. The reversal of 2143021453 is 3541203412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1764252009 + 378769444 = 42003^2 + 19462^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143021453 - 2²¹ = 2140924301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143021459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071510726 + 1071510727.

It is an arithmetic number, because the mean of its divisors is an integer number (1071510727).

Almost surely, 2^2143021453 is an apocalyptic number.

It is an amenable number.

2143021453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143021453 is an equidigital number, since it uses as much as digits as its factorization.

2143021453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2143021453 is about 46292.7797069910. The cubic root of 2143021453 is about 1289.2649404859.

Adding to 2143021453 its reverse (3541203412), we get a palindrome (5684224865).

The spelling of 2143021453 in words is "two billion, one hundred forty-three million, twenty-one thousand, four hundred fifty-three".