240303121 has 4 divisors (see below), whose sum is σ = 243687744. Its totient is φ = 236918500.

The previous prime is 240303083. The next prime is 240303131. The reversal of 240303121 is 121303042.

It is a happy number.

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 240303121 - 2²¹ = 238205969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240303095 and 240303104.

It is not an unprimeable number, because it can be changed into a prime (240303131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692205 + ... + 1692346.

It is an arithmetic number, because the mean of its divisors is an integer number (60921936).

Almost surely, 2^240303121 is an apocalyptic number.

It is an amenable number.

240303121 is a deficient number, since it is larger than the sum of its proper divisors (3384623).

240303121 is an equidigital number, since it uses as much as digits as its factorization.

240303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384622.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 240303121 is about 15501.7134859344. The cubic root of 240303121 is about 621.7080209616.

Adding to 240303121 its reverse (121303042), we get a palindrome (361606163).

The spelling of 240303121 in words is "two hundred forty million, three hundred three thousand, one hundred twenty-one".