13420873 has 2 divisors, whose sum is σ = 13420874. Its totient is φ = 13420872.

The previous prime is 13420807. The next prime is 13420943. The reversal of 13420873 is 37802431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12694969 + 725904 = 3563^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420873 - 2²¹ = 11323721 is a prime.

It is not a weakly prime, because it can be changed into another prime (13420073) 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 as a sum of consecutive naturals, namely, 6710436 + 6710437.

It is an arithmetic number, because the mean of its divisors is an integer number (6710437).

Almost surely, 2^13420873 is an apocalyptic number.

It is an amenable number.

13420873 is a deficient number, since it is larger than the sum of its proper divisors (1).

13420873 is an equidigital number, since it uses as much as digits as its factorization.

13420873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13420873 is about 3663.4509686906. The cubic root of 13420873 is about 237.6440374658.

The spelling of 13420873 in words is "thirteen million, four hundred twenty thousand, eight hundred seventy-three".