240443021 has 8 divisors (see below), whose sum is σ = 295929984. Its totient is φ = 190240560.

The previous prime is 240442999. The next prime is 240443039. The reversal of 240443021 is 120344042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240443021 - 2⁶ = 240442957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240442984 and 240443002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240443051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321025 + ... + 1321206.

It is an arithmetic number, because the mean of its divisors is an integer number (36991248).

Almost surely, 2^240443021 is an apocalyptic number.

It is an amenable number.

240443021 is a deficient number, since it is larger than the sum of its proper divisors (55486963).

240443021 is a wasteful number, since it uses less digits than its factorization.

240443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642251.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240443021 is about 15506.2252337569. The cubic root of 240443021 is about 621.8286464983.

Adding to 240443021 its reverse (120344042), we get a palindrome (360787063).

The spelling of 240443021 in words is "two hundred forty million, four hundred forty-three thousand, twenty-one".