13531041442 has 4 divisors (see below), whose sum is σ = 20296562166. Its totient is φ = 6765520720.

The previous prime is 13531041437. The next prime is 13531041443. The reversal of 13531041442 is 24414013531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24414013531 = 17 ⋅1436118443.

It can be written as a sum of positive squares in only one way, i.e., 12434703121 + 1096338321 = 111511^2 + 33111^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13531041442.

It is not an unprimeable number, because it can be changed into a prime (13531041443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382760359 + ... + 3382760362.

Almost surely, 2^13531041442 is an apocalyptic number.

13531041442 is a deficient number, since it is larger than the sum of its proper divisors (6765520724).

13531041442 is an equidigital number, since it uses as much as digits as its factorization.

13531041442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765520723.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 13531041442 its reverse (24414013531), we get a palindrome (37945054973).

The spelling of 13531041442 in words is "thirteen billion, five hundred thirty-one million, forty-one thousand, four hundred forty-two".