1272347 has 2 divisors, whose sum is σ = 1272348. Its totient is φ = 1272346.

The previous prime is 1272343. The next prime is 1272361. The reversal of 1272347 is 7432721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272347 - 2² = 1272343 is a prime.

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

It is equal to p₉₈₀₈₁ and since 1272347 and 98081 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1272343) 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, 636173 + 636174.

It is an arithmetic number, because the mean of its divisors is an integer number (636174).

2^1272347 is an apocalyptic number.

1272347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272347 is an equidigital number, since it uses as much as digits as its factorization.

1272347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 1272347 is about 1127.9835991715. The cubic root of 1272347 is about 108.3598819877.

The spelling of 1272347 in words is "one million, two hundred seventy-two thousand, three hundred forty-seven".