13102243442 has 18 divisors (see below), whose sum is σ = 20361731949. Its totient is φ = 6322954680.

The previous prime is 13102243409. The next prime is 13102243477. The reversal of 13102243442 is 24434220131.

It can be written as a sum of positive squares in 2 ways, for example, as 13094453761 + 7789681 = 114431^2 + 2791^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=80939.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4693067 + ... + 4695857.

Almost surely, 2^13102243442 is an apocalyptic number.

13102243442 is a deficient number, since it is larger than the sum of its proper divisors (7259488507).

13102243442 is an frugal number, since it uses more digits than its factorization.

13102243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642 (or 2822 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Multiplying 13102243442 by its product of nonzero digits (4608), we get a square (60375137780736 = 7770144²).

Adding to 13102243442 its reverse (24434220131), we get a palindrome (37536463573).

The spelling of 13102243442 in words is "thirteen billion, one hundred two million, two hundred forty-three thousand, four hundred forty-two".