13531642 has 8 divisors (see below), whose sum is σ = 20680596. Its totient is φ = 6638112.

The previous prime is 13531633. The next prime is 13531663. The reversal of 13531642 is 24613531.

It can be written as a sum of positive squares in 2 ways, for example, as 12737761 + 793881 = 3569^2 + 891^2 .

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

It is a super-3 number, since 3×13531642³ (a number of 22 digits) contains 333 as substring.

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, 63723 + ... + 63934.

Almost surely, 2^13531642 is an apocalyptic number.

13531642 is a deficient number, since it is larger than the sum of its proper divisors (7148954).

13531642 is a wasteful number, since it uses less digits than its factorization.

13531642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127712.

The product of its digits is 2160, while the sum is 25.

The square root of 13531642 is about 3678.5380248137. The cubic root of 13531642 is about 238.2960442854.

The spelling of 13531642 in words is "thirteen million, five hundred thirty-one thousand, six hundred forty-two".