12720253 has 24 divisors (see below), whose sum is σ = 16789920. Its totient is φ = 9525600.

The previous prime is 12720247. The next prime is 12720271. The reversal of 12720253 is 35202721.

It is not a de Polignac number, because 12720253 - 2⁹ = 12719741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11578 + ... + 12628.

It is an arithmetic number, because the mean of its divisors is an integer number (699580).

Almost surely, 2^12720253 is an apocalyptic number.

12720253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12720253 is a deficient number, since it is larger than the sum of its proper divisors (4069667).

12720253 is a wasteful number, since it uses less digits than its factorization.

12720253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 12720253 is about 3566.5463686878. The cubic root of 12720253 is about 233.4346115894.

Adding to 12720253 its reverse (35202721), we get a palindrome (47922974).

The spelling of 12720253 in words is "twelve million, seven hundred twenty thousand, two hundred fifty-three".