1121045 has 4 divisors (see below), whose sum is σ = 1345260. Its totient is φ = 896832.

The previous prime is 1121033. The next prime is 1121047. The reversal of 1121045 is 5401211.

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 362404 + 758641 = 602^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121045 - 2¹⁴ = 1104661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121047) 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, 112100 + ... + 112109.

It is an arithmetic number, because the mean of its divisors is an integer number (336315).

2^1121045 is an apocalyptic number.

It is an amenable number.

1121045 is a deficient number, since it is larger than the sum of its proper divisors (224215).

1121045 is an equidigital number, since it uses as much as digits as its factorization.

1121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224214.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1121045 is about 1058.7941254087. The cubic root of 1121045 is about 103.8821705466.

Adding to 1121045 its reverse (5401211), we get a palindrome (6522256).

The spelling of 1121045 in words is "one million, one hundred twenty-one thousand, forty-five".