13420433 has 4 divisors (see below), whose sum is σ = 14452788. Its totient is φ = 12388080.

The previous prime is 13420397. The next prime is 13420453. The reversal of 13420433 is 33402431.

13420433 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8720209 + 4700224 = 2953^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420433 - 2⁸ = 13420177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13420453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516158 + ... + 516183.

It is an arithmetic number, because the mean of its divisors is an integer number (3613197).

Almost surely, 2^13420433 is an apocalyptic number.

13420433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13420433 is a deficient number, since it is larger than the sum of its proper divisors (1032355).

13420433 is a wasteful number, since it uses less digits than its factorization.

13420433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032354.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13420433 is about 3663.3909155317. The cubic root of 13420433 is about 237.6414404038.

Adding to 13420433 its reverse (33402431), we get a palindrome (46822864).

The spelling of 13420433 in words is "thirteen million, four hundred twenty thousand, four hundred thirty-three".