240523021 has 8 divisors (see below), whose sum is σ = 254937024. Its totient is φ = 226138560.

The previous prime is 240523007. The next prime is 240523039. The reversal of 240523021 is 120325042.

240523021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 240523021 - 2¹³ = 240514829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240523021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240523001) 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, 10666 + ... + 24388.

It is an arithmetic number, because the mean of its divisors is an integer number (31867128).

Almost surely, 2^240523021 is an apocalyptic number.

It is an amenable number.

240523021 is a deficient number, since it is larger than the sum of its proper divisors (14414003).

240523021 is a wasteful number, since it uses less digits than its factorization.

240523021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 240523021 is about 15508.8046283393. The cubic root of 240523021 is about 621.8976036194.

Adding to 240523021 its reverse (120325042), we get a palindrome (360848063).

The spelling of 240523021 in words is "two hundred forty million, five hundred twenty-three thousand, twenty-one".