1121173 has 2 divisors, whose sum is σ = 1121174. Its totient is φ = 1121172.

The previous prime is 1121147. The next prime is 1121179. The reversal of 1121173 is 3711211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1096209 + 24964 = 1047^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121173 - 2⁹ = 1120661 is a prime.

1121173 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560586 + 560587.

It is an arithmetic number, because the mean of its divisors is an integer number (560587).

2^1121173 is an apocalyptic number.

It is an amenable number.

1121173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121173 is an equidigital number, since it uses as much as digits as its factorization.

1121173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 16.

The square root of 1121173 is about 1058.8545698064. The cubic root of 1121173 is about 103.8861241232.

Adding to 1121173 its reverse (3711211), we get a palindrome (4832384).

It can be divided in two parts, 11 and 21173, that multiplied together give a triangular number (232903 = T₆₈₂).

The spelling of 1121173 in words is "one million, one hundred twenty-one thousand, one hundred seventy-three".