13531202442 has 40 divisors (see below), whose sum is σ = 30326882916. Its totient is φ = 4509364608.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202442 is 24420213531.

13531202442 is a `hidden beast` number, since 13 + 5 + 3 + 1 + 202 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13518945441 + 12257001 = 116271^2 + 3501^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13531202449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1074768 + ... + 1087284.

Almost surely, 2^13531202442 is an apocalyptic number.

13531202442 is an abundant number, since it is smaller than the sum of its proper divisors (16795680474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13531202442 is a wasteful number, since it uses less digits than its factorization.

13531202442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19204 (or 19195 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 13531202442 its reverse (24420213531), we get a palindrome (37951415973).

The spelling of 13531202442 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred forty-two".