13420424 has 16 divisors (see below), whose sum is σ = 25297920. Its totient is φ = 6674320.

The previous prime is 13420397. The next prime is 13420453. The reversal of 13420424 is 42402431.

It is a super-3 number, since 3×13420424³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13420396 and 13420405.

It is an unprimeable number.

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, 2864 + ... + 5919.

It is an arithmetic number, because the mean of its divisors is an integer number (1581120).

Almost surely, 2^13420424 is an apocalyptic number.

It is an amenable number.

13420424 is a deficient number, since it is larger than the sum of its proper divisors (11877496).

13420424 is a wasteful number, since it uses less digits than its factorization.

13420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980 (or 8976 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 13420424 is about 3663.3896871613. The cubic root of 13420424 is about 237.6413872815.

Adding to 13420424 its reverse (42402431), we get a palindrome (55822855).

The spelling of 13420424 in words is "thirteen million, four hundred twenty thousand, four hundred twenty-four".