13420297 has 4 divisors (see below), whose sum is σ = 14640336. Its totient is φ = 12200260.

The previous prime is 13420291. The next prime is 13420321. The reversal of 13420297 is 79202431.

13420297 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13420297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13420291) 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 3 ways as a sum of consecutive naturals, for example, 610003 + ... + 610024.

It is an arithmetic number, because the mean of its divisors is an integer number (3660084).

Almost surely, 2^13420297 is an apocalyptic number.

It is an amenable number.

13420297 is a deficient number, since it is larger than the sum of its proper divisors (1220039).

13420297 is a wasteful number, since it uses less digits than its factorization.

13420297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220038.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 13420297 is about 3663.3723534470. The cubic root of 13420297 is about 237.6406376641.

The spelling of 13420297 in words is "thirteen million, four hundred twenty thousand, two hundred ninety-seven".