1173121 has 2 divisors, whose sum is σ = 1173122. Its totient is φ = 1173120.

The previous prime is 1173101. The next prime is 1173127. The reversal of 1173121 is 1213711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876096 + 297025 = 936^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173121 - 2⁷ = 1172993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1173095 and 1173104.

It is not a weakly prime, because it can be changed into another prime (1173127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586560 + 586561.

It is an arithmetic number, because the mean of its divisors is an integer number (586561).

2^1173121 is an apocalyptic number.

It is an amenable number.

1173121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1173121 is an equidigital number, since it uses as much as digits as its factorization.

1173121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1173121 is about 1083.1071045838. The cubic root of 1173121 is about 105.4664358687.

Adding to 1173121 its reverse (1213711), we get a palindrome (2386832).

The spelling of 1173121 in words is "one million, one hundred seventy-three thousand, one hundred twenty-one".