1272755 has 16 divisors (see below), whose sum is σ = 1694304. Its totient is φ = 910080.

The previous prime is 1272749. The next prime is 1272811. The reversal of 1272755 is 5572721.

It is not a de Polignac number, because 1272755 - 2¹⁰ = 1271731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3857 + ... + 4173.

It is an arithmetic number, because the mean of its divisors is an integer number (105894).

2^1272755 is an apocalyptic number.

1272755 is a deficient number, since it is larger than the sum of its proper divisors (421549).

1272755 is a wasteful number, since it uses less digits than its factorization.

1272755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406.

The product of its digits is 4900, while the sum is 29.

The square root of 1272755 is about 1128.1644383688. The cubic root of 1272755 is about 108.3714632380.

It can be divided in two parts, 127 and 2755, that added together give a palindrome (2882).

The spelling of 1272755 in words is "one million, two hundred seventy-two thousand, seven hundred fifty-five".