140243556406 has 8 divisors (see below), whose sum is σ = 210662043840. Its totient is φ = 70022875128.

The previous prime is 140243556391. The next prime is 140243556419. The reversal of 140243556406 is 604655342041.

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

It is a super-2 number, since 2×140243556406² (a number of 23 digits) contains 22 as substring.

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, 49449766 + ... + 49452601.

It is an arithmetic number, because the mean of its divisors is an integer number (26332755480).

Almost surely, 2^140243556406 is an apocalyptic number.

140243556406 is a deficient number, since it is larger than the sum of its proper divisors (70418487434).

140243556406 is an equidigital number, since it uses as much as digits as its factorization.

140243556406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98903078.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 140243556406 its reverse (604655342041), we get a palindrome (744898898447).

The spelling of 140243556406 in words is "one hundred forty billion, two hundred forty-three million, five hundred fifty-six thousand, four hundred six".