12705235 has 4 divisors (see below), whose sum is σ = 15246288. Its totient is φ = 10164184.

The previous prime is 12705229. The next prime is 12705271. The reversal of 12705235 is 53250721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53250721 = 631 ⋅84391.

It is a cyclic number.

It is not a de Polignac number, because 12705235 - 2⁹ = 12704723 is a prime.

It is a super-2 number, since 2×12705235² = 322845992810450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270519 + ... + 1270528.

It is an arithmetic number, because the mean of its divisors is an integer number (3811572).

Almost surely, 2^12705235 is an apocalyptic number.

12705235 is a deficient number, since it is larger than the sum of its proper divisors (2541053).

12705235 is an equidigital number, since it uses as much as digits as its factorization.

12705235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541052.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 12705235 is about 3564.4403487785. The cubic root of 12705235 is about 233.3427082401.

Adding to 12705235 its reverse (53250721), we get a palindrome (65955956).

The spelling of 12705235 in words is "twelve million, seven hundred five thousand, two hundred thirty-five".