13420245 has 16 divisors (see below), whose sum is σ = 21595392. Its totient is φ = 7116480.

The previous prime is 13420237. The next prime is 13420271. The reversal of 13420245 is 54202431.

It is not a de Polignac number, because 13420245 - 2³ = 13420237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (1349712).

Almost surely, 2^13420245 is an apocalyptic number.

13420245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13420245 is a deficient number, since it is larger than the sum of its proper divisors (8175147).

13420245 is a wasteful number, since it uses less digits than its factorization.

13420245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 13420245 is about 3663.3652561545. The cubic root of 13420245 is about 237.6403307327.

Adding to 13420245 its reverse (54202431), we get a palindrome (67622676).

The spelling of 13420245 in words is "thirteen million, four hundred twenty thousand, two hundred forty-five".