240321001 has 4 divisors (see below), whose sum is σ = 240353604. Its totient is φ = 240288400.

The previous prime is 240320963. The next prime is 240321007. The reversal of 240321001 is 100123042.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 238733401 + 1587600 = 15451^2 + 1260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240321001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240321007) 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, 591 + ... + 21931.

It is an arithmetic number, because the mean of its divisors is an integer number (60088401).

Almost surely, 2^240321001 is an apocalyptic number.

It is an amenable number.

240321001 is a deficient number, since it is larger than the sum of its proper divisors (32603).

240321001 is a wasteful number, since it uses less digits than its factorization.

240321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32602.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 240321001 is about 15502.2901856468. The cubic root of 240321001 is about 621.7234401867.

Adding to 240321001 its reverse (100123042), we get a palindrome (340444043).

The spelling of 240321001 in words is "two hundred forty million, three hundred twenty-one thousand, one".