13042685 has 8 divisors (see below), whose sum is σ = 16074456. Its totient is φ = 10152000.

The previous prime is 13042681. The next prime is 13042693. The reversal of 13042685 is 58624031.

It can be written as a sum of positive squares in 4 ways, for example, as 4897369 + 8145316 = 2213^2 + 2854^2 .

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

It is not a de Polignac number, because 13042685 - 2² = 13042681 is a prime.

It is a super-2 number, since 2×13042685² = 340223264018450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35066 + ... + 35435.

It is an arithmetic number, because the mean of its divisors is an integer number (2009307).

Almost surely, 2^13042685 is an apocalyptic number.

It is an amenable number.

13042685 is a deficient number, since it is larger than the sum of its proper divisors (3031771).

13042685 is an equidigital number, since it uses as much as digits as its factorization.

13042685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70543.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 13042685 is about 3611.4657689088. The cubic root of 13042685 is about 235.3905381849.

The spelling of 13042685 in words is "thirteen million, forty-two thousand, six hundred eighty-five".