12842505 has 48 divisors (see below), whose sum is σ = 24832080. Its totient is φ = 6096384.

The previous prime is 12842503. The next prime is 12842519. The reversal of 12842505 is 50524821.

It is a happy number.

12842505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 480249 + 12362256 = 693^2 + 3516^2 .

It is not a de Polignac number, because 12842505 - 2¹ = 12842503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12842503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16587 + ... + 17343.

It is an arithmetic number, because the mean of its divisors is an integer number (517335).

Almost surely, 2^12842505 is an apocalyptic number.

12842505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12842505 is a deficient number, since it is larger than the sum of its proper divisors (11989575).

12842505 is a wasteful number, since it uses less digits than its factorization.

12842505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 12842505 is about 3583.6440950519. The cubic root of 12842505 is about 234.1800608395.

The spelling of 12842505 in words is "twelve million, eight hundred forty-two thousand, five hundred five".