13042224 has 60 divisors (see below), whose sum is σ = 39313456. Its totient is φ = 4012416.

The previous prime is 13042207. The next prime is 13042259. The reversal of 13042224 is 42224031.

13042224 = T₂₄₅ + T₂₄₆ + ... + T₄₅₂.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13042197 and 13042206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1612 + ... + 5355.

Almost surely, 2^13042224 is an apocalyptic number.

It is an amenable number.

13042224 is an abundant number, since it is smaller than the sum of its proper divisors (26271232).

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

13042224 is a wasteful number, since it uses less digits than its factorization.

13042224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13042224 is about 3611.4019438440. The cubic root of 13042224 is about 235.3877648215.

Adding to 13042224 its reverse (42224031), we get a palindrome (55266255).

The spelling of 13042224 in words is "thirteen million, forty-two thousand, two hundred twenty-four".