13842565 has 16 divisors (see below), whose sum is σ = 18195840. Its totient is φ = 10025920.

The previous prime is 13842559. The next prime is 13842589. The reversal of 13842565 is 56524831.

It is not a de Polignac number, because 13842565 - 2³ = 13842557 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13842565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21072 + ... + 21718.

It is an arithmetic number, because the mean of its divisors is an integer number (1137240).

Almost surely, 2^13842565 is an apocalyptic number.

It is an amenable number.

13842565 is a deficient number, since it is larger than the sum of its proper divisors (4353275).

13842565 is a wasteful number, since it uses less digits than its factorization.

13842565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 28800, while the sum is 34.

The square root of 13842565 is about 3720.5597697121. The cubic root of 13842565 is about 240.1073882844.

The spelling of 13842565 in words is "thirteen million, eight hundred forty-two thousand, five hundred sixty-five".