1272247 has 2 divisors, whose sum is σ = 1272248. Its totient is φ = 1272246.

The previous prime is 1272233. The next prime is 1272253. The reversal of 1272247 is 7422721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272247 is a prime.

It is a super-2 number, since 2×1272247² = 3237224858018, which contains 22 as substring.

1272247 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636123 + 636124.

It is an arithmetic number, because the mean of its divisors is an integer number (636124).

2^1272247 is an apocalyptic number.

1272247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272247 is an equidigital number, since it uses as much as digits as its factorization.

1272247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 25.

The square root of 1272247 is about 1127.9392714149. The cubic root of 1272247 is about 108.3570430683.

Adding to 1272247 its reverse (7422721), we get a palindrome (8694968).

It can be divided in two parts, 12722 and 47, that added together give a square (12769 = 113²).

The spelling of 1272247 in words is "one million, two hundred seventy-two thousand, two hundred forty-seven".