1121272 has 8 divisors (see below), whose sum is σ = 2102400. Its totient is φ = 560632.

The previous prime is 1121261. The next prime is 1121293. The reversal of 1121272 is 2721211.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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, 70072 + ... + 70087.

It is an arithmetic number, because the mean of its divisors is an integer number (262800).

2^1121272 is an apocalyptic number.

It is an amenable number.

1121272 is a deficient number, since it is larger than the sum of its proper divisors (981128).

1121272 is a wasteful number, since it uses less digits than its factorization.

1121272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140165 (or 140161 counting only the distinct ones).

The product of its digits is 56, while the sum is 16.

The square root of 1121272 is about 1058.9013174040. The cubic root of 1121272 is about 103.8891817612.

Adding to 1121272 its reverse (2721211), we get a palindrome (3842483).

The spelling of 1121272 in words is "one million, one hundred twenty-one thousand, two hundred seventy-two".