1121253 has 16 divisors (see below), whose sum is σ = 1728000. Its totient is φ = 633456.

The previous prime is 1121249. The next prime is 1121257. The reversal of 1121253 is 3521211.

1121253 is a nontrivial binomial coefficient, being equal to C(1498, 2).

It is an interprime number because it is at equal distance from previous prime (1121249) and next prime (1121257).

It is not a de Polignac number, because 1121253 - 2² = 1121249 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121257) 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 15 ways as a sum of consecutive naturals, for example, 1998 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (108000).

2^1121253 is an apocalyptic number.

1121253 is the 1497-th triangular number and also the 749-th hexagonal number.

It is an amenable number.

1121253 is a deficient number, since it is larger than the sum of its proper divisors (606747).

1121253 is a wasteful number, since it uses less digits than its factorization.

1121253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its digits is 60, while the sum is 15.

The square root of 1121253 is about 1058.8923458029. The cubic root of 1121253 is about 103.8885949558. Note that the first 3 decimals are identical.

Adding to 1121253 its reverse (3521211), we get a palindrome (4642464).

The spelling of 1121253 in words is "one million, one hundred twenty-one thousand, two hundred fifty-three".