732421121 has 4 divisors (see below), whose sum is σ = 737271744. Its totient is φ = 727570500.

The previous prime is 732421091. The next prime is 732421141. The reversal of 732421121 is 121124237.

732421121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 732421121 - 2⁶ = 732421057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (732421141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2425085 + ... + 2425386.

It is an arithmetic number, because the mean of its divisors is an integer number (184317936).

Almost surely, 2^732421121 is an apocalyptic number.

It is an amenable number.

732421121 is a deficient number, since it is larger than the sum of its proper divisors (4850623).

732421121 is a wasteful number, since it uses less digits than its factorization.

732421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850622.

The product of its digits is 672, while the sum is 23.

The square root of 732421121 is about 27063.2799379528. The cubic root of 732421121 is about 901.4056721212.

Adding to 732421121 its reverse (121124237), we get a palindrome (853545358).

The spelling of 732421121 in words is "seven hundred thirty-two million, four hundred twenty-one thousand, one hundred twenty-one".