1121671 has 2 divisors, whose sum is σ = 1121672. Its totient is φ = 1121670.

The previous prime is 1121651. The next prime is 1121689. The reversal of 1121671 is 1761211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121671 - 2⁷ = 1121543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560835 + 560836.

It is an arithmetic number, because the mean of its divisors is an integer number (560836).

2^1121671 is an apocalyptic number.

1121671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121671 is an equidigital number, since it uses as much as digits as its factorization.

1121671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84, while the sum is 19.

The square root of 1121671 is about 1059.0897034718. The cubic root of 1121671 is about 103.9015031449.

Adding to 1121671 its reverse (1761211), we get a palindrome (2882882).

The spelling of 1121671 in words is "one million, one hundred twenty-one thousand, six hundred seventy-one".