1205133 has 4 divisors (see below), whose sum is σ = 1606848. Its totient is φ = 803420.

The previous prime is 1205123. The next prime is 1205159. The reversal of 1205133 is 3315021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1205133 - 2⁴ = 1205117 is a prime.

It is a D-number.

1205133 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205123) 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, 200853 + ... + 200858.

It is an arithmetic number, because the mean of its divisors is an integer number (401712).

2^1205133 is an apocalyptic number.

It is an amenable number.

1205133 is a deficient number, since it is larger than the sum of its proper divisors (401715).

1205133 is an equidigital number, since it uses as much as digits as its factorization.

1205133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401714.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 1205133 is about 1097.7854981735. The cubic root of 1205133 is about 106.4171587926.

It can be divided in two parts, 120 and 5133, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 1205133 in words is "one million, two hundred five thousand, one hundred thirty-three".