13526642 has 4 divisors (see below), whose sum is σ = 20289966. Its totient is φ = 6763320.

The previous prime is 13526621. The next prime is 13526659. The reversal of 13526642 is 24662531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24662531 = 59 ⋅418009.

It can be written as a sum of positive squares in only one way, i.e., 8994001 + 4532641 = 2999^2 + 2129^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3381659 + ... + 3381662.

Almost surely, 2^13526642 is an apocalyptic number.

13526642 is a deficient number, since it is larger than the sum of its proper divisors (6763324).

13526642 is an equidigital number, since it uses as much as digits as its factorization.

13526642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763323.

The product of its digits is 8640, while the sum is 29.

The square root of 13526642 is about 3677.8583441998. The cubic root of 13526642 is about 238.2666901981.

The spelling of 13526642 in words is "thirteen million, five hundred twenty-six thousand, six hundred forty-two".