13442040 has 48 divisors (see below), whose sum is σ = 43687800. Its totient is φ = 3584448.

The previous prime is 13442017. The next prime is 13442057. The reversal of 13442040 is 4024431.

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

It is a congruent number.

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, 18310 + ... + 19029.

Almost surely, 2^13442040 is an apocalyptic number.

13442040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13442040 is an abundant number, since it is smaller than the sum of its proper divisors (30245760).

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

13442040 is a wasteful number, since it uses less digits than its factorization.

13442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37356 (or 37349 counting only the distinct ones).

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

The square root of 13442040 is about 3666.3387732178. The cubic root of 13442040 is about 237.7689068678.

Adding to 13442040 its reverse (4024431), we get a palindrome (17466471).

The spelling of 13442040 in words is "thirteen million, four hundred forty-two thousand, forty".