240021005 has 8 divisors (see below), whose sum is σ = 329171712. Its totient is φ = 164585808.

The previous prime is 240020999. The next prime is 240021013. The reversal of 240021005 is 500120042.

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 240021005 - 2¹⁴ = 240004621 is a prime.

It is a super-2 number, since 2×240021005² = 115220165682420050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3428837 + ... + 3428906.

It is an arithmetic number, because the mean of its divisors is an integer number (41146464).

Almost surely, 2^240021005 is an apocalyptic number.

It is an amenable number.

240021005 is a deficient number, since it is larger than the sum of its proper divisors (89150707).

240021005 is an equidigital number, since it uses as much as digits as its factorization.

240021005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857755.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 240021005 is about 15492.6113034569. The cubic root of 240021005 is about 621.4646305004.

Adding to 240021005 its reverse (500120042), we get a palindrome (740141047).

The spelling of 240021005 in words is "two hundred forty million, twenty-one thousand, five".