13404342 has 48 divisors (see below), whose sum is σ = 31518720. Its totient is φ = 3789072.

The previous prime is 13404319. The next prime is 13404343. The reversal of 13404342 is 24340431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404343) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 37159 + ... + 37517.

It is an arithmetic number, because the mean of its divisors is an integer number (656640).

Almost surely, 2^13404342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13404342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15759360).

13404342 is an abundant number, since it is smaller than the sum of its proper divisors (18114378).

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

13404342 is a wasteful number, since it uses less digits than its factorization.

13404342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13404342 is about 3661.1940675140. The cubic root of 13404342 is about 237.5464256427.

Adding to 13404342 its reverse (24340431), we get a palindrome (37744773).

The spelling of 13404342 in words is "thirteen million, four hundred four thousand, three hundred forty-two".