13105642 has 8 divisors (see below), whose sum is σ = 21445632. Its totient is φ = 5957100.

The previous prime is 13105639. The next prime is 13105643. The reversal of 13105642 is 24650131.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 595711 = 13105642 / (1 + 3 + 1 + 0 + 5 + 6 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (13105643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297834 + ... + 297877.

It is an arithmetic number, because the mean of its divisors is an integer number (2680704).

Almost surely, 2^13105642 is an apocalyptic number.

13105642 is a deficient number, since it is larger than the sum of its proper divisors (8339990).

13105642 is a wasteful number, since it uses less digits than its factorization.

13105642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595724.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 13105642 is about 3620.1715428968. The cubic root of 13105642 is about 235.7686735489.

Adding to 13105642 its reverse (24650131), we get a palindrome (37755773).

The spelling of 13105642 in words is "thirteen million, one hundred five thousand, six hundred forty-two".