13542145 has 4 divisors (see below), whose sum is σ = 16250580. Its totient is φ = 10833712.

The previous prime is 13542143. The next prime is 13542161. The reversal of 13542145 is 54124531.

It is a happy number.

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 9199089 + 4343056 = 3033^2 + 2084^2 .

It is a cyclic number.

It is not a de Polignac number, because 13542145 - 2¹ = 13542143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13542143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1354210 + ... + 1354219.

It is an arithmetic number, because the mean of its divisors is an integer number (4062645).

Almost surely, 2^13542145 is an apocalyptic number.

It is an amenable number.

13542145 is a deficient number, since it is larger than the sum of its proper divisors (2708435).

13542145 is an equidigital number, since it uses as much as digits as its factorization.

13542145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708434.

The product of its digits is 2400, while the sum is 25.

The square root of 13542145 is about 3679.9653530978. The cubic root of 13542145 is about 238.3576819414.

Adding to 13542145 its reverse (54124531), we get a palindrome (67666676).

The spelling of 13542145 in words is "thirteen million, five hundred forty-two thousand, one hundred forty-five".