232540121 has 4 divisors (see below), whose sum is σ = 253680144. Its totient is φ = 211400100.

The previous prime is 232540073. The next prime is 232540141. The reversal of 232540121 is 121045232.

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 232540121 - 2¹⁴ = 232523737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232540093 and 232540102.

It is not an unprimeable number, because it can be changed into a prime (232540141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10569995 + ... + 10570016.

It is an arithmetic number, because the mean of its divisors is an integer number (63420036).

Almost surely, 2^232540121 is an apocalyptic number.

It is an amenable number.

232540121 is a deficient number, since it is larger than the sum of its proper divisors (21140023).

232540121 is a wasteful number, since it uses less digits than its factorization.

232540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21140022.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 232540121 is about 15249.2662446427. The cubic root of 232540121 is about 614.9398412083.

Adding to 232540121 its reverse (121045232), we get a palindrome (353585353).

The spelling of 232540121 in words is "two hundred thirty-two million, five hundred forty thousand, one hundred twenty-one".