13530253442 has 4 divisors (see below), whose sum is σ = 20295380166. Its totient is φ = 6765126720.

The previous prime is 13530253441. The next prime is 13530253487. The reversal of 13530253442 is 24435203531.

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

It can be written as a sum of positive squares in only one way, i.e., 13009911721 + 520341721 = 114061^2 + 22811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13530253399 and 13530253408.

It is not an unprimeable number, because it can be changed into a prime (13530253441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382563359 + ... + 3382563362.

Almost surely, 2^13530253442 is an apocalyptic number.

13530253442 is a deficient number, since it is larger than the sum of its proper divisors (6765126724).

13530253442 is an equidigital number, since it uses as much as digits as its factorization.

13530253442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765126723.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 13530253442 its reverse (24435203531), we get a palindrome (37965456973).

The spelling of 13530253442 in words is "thirteen billion, five hundred thirty million, two hundred fifty-three thousand, four hundred forty-two".