13420465 has 4 divisors (see below), whose sum is σ = 16104564. Its totient is φ = 10736368.

The previous prime is 13420453. The next prime is 13420469. The reversal of 13420465 is 56402431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56402431 = 19 ⋅2968549.

It can be written as a sum of positive squares in 2 ways, for example, as 7225344 + 6195121 = 2688^2 + 2489^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420465 - 2¹¹ = 13418417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13420469) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1342042 + ... + 1342051.

It is an arithmetic number, because the mean of its divisors is an integer number (4026141).

Almost surely, 2^13420465 is an apocalyptic number.

It is an amenable number.

13420465 is a deficient number, since it is larger than the sum of its proper divisors (2684099).

13420465 is an equidigital number, since it uses as much as digits as its factorization.

13420465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684098.

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

The square root of 13420465 is about 3663.3952830673. The cubic root of 13420465 is about 237.6416292830.

Adding to 13420465 its reverse (56402431), we get a palindrome (69822896).

The spelling of 13420465 in words is "thirteen million, four hundred twenty thousand, four hundred sixty-five".