140406145506 has 96 divisors (see below), whose sum is σ = 353666746368. Its totient is φ = 39831469920.

The previous prime is 140406145487. The next prime is 140406145511. The reversal of 140406145506 is 605541604041.

140406145506 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 0 + 6 + 145 + 506 = 666.

140406145506 is digitally balanced in base 7, 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 47 ways as a sum of consecutive naturals, for example, 113956 + ... + 542031.

It is an arithmetic number, because the mean of its divisors is an integer number (3684028608).

Almost surely, 2^140406145506 is an apocalyptic number.

140406145506 is an abundant number, since it is smaller than the sum of its proper divisors (213260600862).

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

140406145506 is a wasteful number, since it uses less digits than its factorization.

140406145506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656076 (or 656073 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 140406145506 its reverse (605541604041), we get a palindrome (745947749547).

The spelling of 140406145506 in words is "one hundred forty billion, four hundred six million, one hundred forty-five thousand, five hundred six".