240468021 has 20 divisors (see below), whose sum is σ = 363774400. Its totient is φ = 158278536.

The previous prime is 240467989. The next prime is 240468031. The reversal of 240468021 is 120864042.

It is not a de Polignac number, because 240468021 - 2⁵ = 240467989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240468031) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12391 + ... + 25188.

It is an arithmetic number, because the mean of its divisors is an integer number (18188720).

Almost surely, 2^240468021 is an apocalyptic number.

It is an amenable number.

240468021 is a deficient number, since it is larger than the sum of its proper divisors (123306379).

240468021 is an equidigital number, since it uses as much as digits as its factorization.

240468021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37670 (or 37661 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 240468021 is about 15507.0313406532. The cubic root of 240468021 is about 621.8501972415.

The spelling of 240468021 in words is "two hundred forty million, four hundred sixty-eight thousand, twenty-one".