240810661420 has 48 divisors (see below), whose sum is σ = 591386197248. Its totient is φ = 80643568320.

The previous prime is 240810661397. The next prime is 240810661499. The reversal of 240810661420 is 24166018042.

240810661420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19994866 + ... + 20006905.

It is an arithmetic number, because the mean of its divisors is an integer number (12320545776).

Almost surely, 2^240810661420 is an apocalyptic number.

240810661420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240810661420 is an abundant number, since it is smaller than the sum of its proper divisors (350575535828).

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

240810661420 is a wasteful number, since it uses less digits than its factorization.

240810661420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40001830 (or 40001828 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

Adding to 240810661420 its reverse (24166018042), we get a palindrome (264976679462).

The spelling of 240810661420 in words is "two hundred forty billion, eight hundred ten million, six hundred sixty-one thousand, four hundred twenty".