13521005442 has 48 divisors (see below), whose sum is σ = 33736203072. Its totient is φ = 3833650080.

The previous prime is 13521005419. The next prime is 13521005513. The reversal of 13521005442 is 24450012531.

13521005442 is a `hidden beast` number, since 1 + 3 + 5 + 210 + 0 + 5 + 442 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393073 + ... + 426084.

It is an arithmetic number, because the mean of its divisors is an integer number (702837564).

Almost surely, 2^13521005442 is an apocalyptic number.

13521005442 is an abundant number, since it is smaller than the sum of its proper divisors (20215197630).

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

13521005442 is a wasteful number, since it uses less digits than its factorization.

13521005442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819303 (or 819300 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 13521005442 its reverse (24450012531), we get a palindrome (37971017973).

The spelling of 13521005442 in words is "thirteen billion, five hundred twenty-one million, five thousand, four hundred forty-two".