1267121 has 2 divisors, whose sum is σ = 1267122. Its totient is φ = 1267120.

The previous prime is 1267117. The next prime is 1267127. The reversal of 1267121 is 1217621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 57121 = 1100^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1267121 - 2² = 1267117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1267093 and 1267102.

It is not a weakly prime, because it can be changed into another prime (1267127) by changing a digit.

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 as a sum of consecutive naturals, namely, 633560 + 633561.

It is an arithmetic number, because the mean of its divisors is an integer number (633561).

2^1267121 is an apocalyptic number.

It is an amenable number.

1267121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1267121 is an equidigital number, since it uses as much as digits as its factorization.

1267121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 20.

The square root of 1267121 is about 1125.6646925262. The cubic root of 1267121 is about 108.2113203568.

The spelling of 1267121 in words is "one million, two hundred sixty-seven thousand, one hundred twenty-one".