1272743 has 4 divisors (see below), whose sum is σ = 1276128. Its totient is φ = 1269360.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272743 is 3472721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1272743 - 2⁶ = 1272679 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272749) 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 in 3 ways as a sum of consecutive naturals, for example, 1046 + ... + 1907.

It is an arithmetic number, because the mean of its divisors is an integer number (319032).

2^1272743 is an apocalyptic number.

1272743 is a deficient number, since it is larger than the sum of its proper divisors (3385).

1272743 is an equidigital number, since it uses as much as digits as its factorization.

1272743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384.

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

The square root of 1272743 is about 1128.1591199826. The cubic root of 1272743 is about 108.3711226483.

The spelling of 1272743 in words is "one million, two hundred seventy-two thousand, seven hundred forty-three".