240021331312240 has 40 divisors (see below), whose sum is σ = 558051721051248. Its totient is φ = 96008166804480.

The previous prime is 240021331312237. The next prime is 240021331312319. The reversal of 240021331312240 is 42213133120042.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×240021331312240² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240021331312199 and 240021331312208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15927480 + ... + 27087400.

Almost surely, 2^{240021331312240} is an apocalyptic number.

240021331312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240021331312240 is an abundant number, since it is smaller than the sum of its proper divisors (318030389739008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240021331312240 is a wasteful number, since it uses less digits than its factorization.

240021331312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428777 (or 11428771 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 240021331312240 its reverse (42213133120042), we get a palindrome (282234464432282).

The spelling of 240021331312240 in words is "two hundred forty trillion, twenty-one billion, three hundred thirty-one million, three hundred twelve thousand, two hundred forty".