1272461 has 2 divisors, whose sum is σ = 1272462. Its totient is φ = 1272460.

The previous prime is 1272451. The next prime is 1272539. The reversal of 1272461 is 1642721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 75625 = 1094^2 + 275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272461 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272421) 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, 636230 + 636231.

It is an arithmetic number, because the mean of its divisors is an integer number (636231).

2^1272461 is an apocalyptic number.

It is an amenable number.

1272461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272461 is an equidigital number, since it uses as much as digits as its factorization.

1272461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 1272461 is about 1128.0341306893. The cubic root of 1272461 is about 108.3631181745.

The spelling of 1272461 in words is "one million, two hundred seventy-two thousand, four hundred sixty-one".