13404542 has 4 divisors (see below), whose sum is σ = 20106816. Its totient is φ = 6702270.

The previous prime is 13404533. The next prime is 13404563. The reversal of 13404542 is 24540431.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3351134 + ... + 3351137.

It is an arithmetic number, because the mean of its divisors is an integer number (5026704).

Almost surely, 2^13404542 is an apocalyptic number.

13404542 is a deficient number, since it is larger than the sum of its proper divisors (6702274).

13404542 is an equidigital number, since it uses as much as digits as its factorization.

13404542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702273.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13404542 is about 3661.2213809056. The cubic root of 13404542 is about 237.5476070770.

Adding to 13404542 its reverse (24540431), we get a palindrome (37944973).

The spelling of 13404542 in words is "thirteen million, four hundred four thousand, five hundred forty-two".