1141165 has 4 divisors (see below), whose sum is σ = 1369404. Its totient is φ = 912928.

The previous prime is 1141139. The next prime is 1141171. The reversal of 1141165 is 5611411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145161 + 996004 = 381^2 + 998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141165 - 2¹⁵ = 1108397 is a prime.

It is an Ulam number.

It is a Duffinian number.

1141165 is a lucky number.

It is a plaindrome in base 16.

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, 114112 + ... + 114121.

It is an arithmetic number, because the mean of its divisors is an integer number (342351).

2^1141165 is an apocalyptic number.

It is an amenable number.

1141165 is a deficient number, since it is larger than the sum of its proper divisors (228239).

1141165 is an equidigital number, since it uses as much as digits as its factorization.

1141165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228238.

The product of its digits is 120, while the sum is 19.

The square root of 1141165 is about 1068.2532471282. The cubic root of 1141165 is about 104.4999656601.

Adding to 1141165 its reverse (5611411), we get a palindrome (6752576).

It can be divided in two parts, 11411 and 65, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 1141165 in words is "one million, one hundred forty-one thousand, one hundred sixty-five".