1001272 has 16 divisors (see below), whose sum is σ = 1888560. Its totient is φ = 497664.

The previous prime is 1001267. The next prime is 1001279. The reversal of 1001272 is 2721001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001279) 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 in 3 ways as a sum of consecutive naturals, for example, 1813 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (118035).

2^1001272 is an apocalyptic number.

It is an amenable number.

1001272 is a deficient number, since it is larger than the sum of its proper divisors (887288).

1001272 is a wasteful number, since it uses less digits than its factorization.

1001272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 1001272 is about 1000.6357978805. The cubic root of 1001272 is about 100.0423820351.

Adding to 1001272 its reverse (2721001), we get a palindrome (3722273).

It can be divided in two parts, 1001 and 272, that multiplied together give a palindrome (272272).

The spelling of 1001272 in words is "one million, one thousand, two hundred seventy-two".