733121 has 4 divisors (see below), whose sum is σ = 751044. Its totient is φ = 715200.

The previous prime is 733111. The next prime is 733123. The reversal of 733121 is 121337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121337 = 67 ⋅1811.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 600625 = 364^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 733121 - 2¹⁰ = 732097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 733121.

It is not an unprimeable number, because it can be changed into a prime (733123) 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, 8900 + ... + 8981.

It is an arithmetic number, because the mean of its divisors is an integer number (187761).

2⁷³³¹²¹ is an apocalyptic number.

It is an amenable number.

733121 is a deficient number, since it is larger than the sum of its proper divisors (17923).

733121 is a wasteful number, since it uses less digits than its factorization.

733121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17922.

The product of its digits is 126, while the sum is 17.

The square root of 733121 is about 856.2248536453. The cubic root of 733121 is about 90.1692699188.

Adding to 733121 its reverse (121337), we get a palindrome (854458).

The spelling of 733121 in words is "seven hundred thirty-three thousand, one hundred twenty-one".