140440310121 has 8 divisors (see below), whose sum is σ = 198268673184. Its totient is φ = 88119410240.

The previous prime is 140440310117. The next prime is 140440310173. The reversal of 140440310121 is 121013044041.

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

It is not a de Polignac number, because 140440310121 - 2² = 140440310117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140440310821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376865735 + ... + 1376865836.

It is an arithmetic number, because the mean of its divisors is an integer number (24783584148).

Almost surely, 2^140440310121 is an apocalyptic number.

It is an amenable number.

140440310121 is a deficient number, since it is larger than the sum of its proper divisors (57828363063).

140440310121 is a wasteful number, since it uses less digits than its factorization.

140440310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753731591.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 140440310121 its reverse (121013044041), we get a palindrome (261453354162).

The spelling of 140440310121 in words is "one hundred forty billion, four hundred forty million, three hundred ten thousand, one hundred twenty-one".