13520531042 has 8 divisors (see below), whose sum is σ = 20558615916. Its totient is φ = 6667659072.

The previous prime is 13520531039. The next prime is 13520531131. The reversal of 13520531042 is 24013502531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13123764481 + 396766561 = 114559^2 + 19919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46303043 + ... + 46303334.

Almost surely, 2^13520531042 is an apocalyptic number.

13520531042 is a deficient number, since it is larger than the sum of its proper divisors (7038084874).

13520531042 is an equidigital number, since it uses as much as digits as its factorization.

13520531042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92606452.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 13520531042 in words is "thirteen billion, five hundred twenty million, five hundred thirty-one thousand, forty-two".