1272361 has 2 divisors, whose sum is σ = 1272362. Its totient is φ = 1272360.

The previous prime is 1272347. The next prime is 1272367. The reversal of 1272361 is 1632721.

It is the 461-st star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142761 + 129600 = 1069^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272361 - 2⁵ = 1272329 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1272367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636180 + 636181.

It is an arithmetic number, because the mean of its divisors is an integer number (636181).

2^1272361 is an apocalyptic number.

It is an amenable number.

1272361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272361 is an equidigital number, since it uses as much as digits as its factorization.

1272361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 1272361 is about 1127.9898049185. The cubic root of 1272361 is about 108.3602794246.

The spelling of 1272361 in words is "one million, two hundred seventy-two thousand, three hundred sixty-one".