240020406406 has 8 divisors (see below), whose sum is σ = 392760665064. Its totient is φ = 109100184720.

The previous prime is 240020406397. The next prime is 240020406413. The reversal of 240020406406 is 604604020042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5455009215 + ... + 5455009258.

It is an arithmetic number, because the mean of its divisors is an integer number (49095083133).

Almost surely, 2^240020406406 is an apocalyptic number.

240020406406 is a deficient number, since it is larger than the sum of its proper divisors (152740258658).

240020406406 is a wasteful number, since it uses less digits than its factorization.

240020406406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10910018486.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 240020406406 its reverse (604604020042), we get a palindrome (844624426448).

The spelling of 240020406406 in words is "two hundred forty billion, twenty million, four hundred six thousand, four hundred six".