140240654621 has 8 divisors (see below), whose sum is σ = 141362095104. Its totient is φ = 139119482880.

The previous prime is 140240654579. The next prime is 140240654623. The reversal of 140240654621 is 126456042041.

140240654621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140240654621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140240654623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055261 + ... + 1180701.

It is an arithmetic number, because the mean of its divisors is an integer number (17670261888).

Almost surely, 2^140240654621 is an apocalyptic number.

It is an amenable number.

140240654621 is a deficient number, since it is larger than the sum of its proper divisors (1121440483).

140240654621 is a wasteful number, since it uses less digits than its factorization.

140240654621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134371.

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 140240654621 its reverse (126456042041), we get a palindrome (266696696662).

The spelling of 140240654621 in words is "one hundred forty billion, two hundred forty million, six hundred fifty-four thousand, six hundred twenty-one".