13143424 has 32 divisors (see below), whose sum is σ = 29926800. Its totient is φ = 5632512.

The previous prime is 13143407. The next prime is 13143443. The reversal of 13143424 is 42434131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 13143395 and 13143404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6439 + ... + 8230.

Almost surely, 2^13143424 is an apocalyptic number.

13143424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13143424 is an abundant number, since it is smaller than the sum of its proper divisors (16783376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13143424 is an equidigital number, since it uses as much as digits as its factorization.

13143424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14690 (or 14678 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 13143424 is about 3625.3860484092. The cubic root of 13143424 is about 235.9950204829.

Adding to 13143424 its reverse (42434131), we get a palindrome (55577555).

The spelling of 13143424 in words is "thirteen million, one hundred forty-three thousand, four hundred twenty-four".