13542005 has 4 divisors (see below), whose sum is σ = 16250412. Its totient is φ = 10833600.

The previous prime is 13541993. The next prime is 13542029. The reversal of 13542005 is 50024531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4092529 + 9449476 = 2023^2 + 3074^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13542005 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 1354196 + ... + 1354205.

It is an arithmetic number, because the mean of its divisors is an integer number (4062603).

Almost surely, 2^13542005 is an apocalyptic number.

It is an amenable number.

13542005 is a deficient number, since it is larger than the sum of its proper divisors (2708407).

13542005 is an equidigital number, since it uses as much as digits as its factorization.

13542005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708406.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 13542005 is about 3679.9463311304. The cubic root of 13542005 is about 238.3568605504.

Adding to 13542005 its reverse (50024531), we get a palindrome (63566536).

The spelling of 13542005 in words is "thirteen million, five hundred forty-two thousand, five".