1235005 has 4 divisors (see below), whose sum is σ = 1482012. Its totient is φ = 988000.

The previous prime is 1234991. The next prime is 1235021. The reversal of 1235005 is 5005321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005321 = 41 ⋅122081.

It can be written as a sum of positive squares in 2 ways, for example, as 182329 + 1052676 = 427^2 + 1026^2 .

It is not a de Polignac number, because 1235005 - 2¹⁷ = 1103933 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1235005.

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 3 ways as a sum of consecutive naturals, for example, 123496 + ... + 123505.

It is an arithmetic number, because the mean of its divisors is an integer number (370503).

2^1235005 is an apocalyptic number.

It is an amenable number.

1235005 is a deficient number, since it is larger than the sum of its proper divisors (247007).

1235005 is an equidigital number, since it uses as much as digits as its factorization.

1235005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247006.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1235005 is about 1111.3077881487. The cubic root of 1235005 is about 107.2892572222.

The spelling of 1235005 in words is "one million, two hundred thirty-five thousand, five".