140140121 has 8 divisors (see below), whose sum is σ = 152969664. Its totient is φ = 127325520.

The previous prime is 140140111. The next prime is 140140153. The reversal of 140140121 is 121041041.

140140121 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-140140121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140140096 and 140140105.

It is not an unprimeable number, because it can be changed into a prime (140140111) 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, 26711 + ... + 31523.

It is an arithmetic number, because the mean of its divisors is an integer number (19121208).

Almost surely, 2^140140121 is an apocalyptic number.

140140121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140140121 is a deficient number, since it is larger than the sum of its proper divisors (12829543).

140140121 is a wasteful number, since it uses less digits than its factorization.

140140121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7471.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 140140121 is about 11838.0792783289. The cubic root of 140140121 is about 519.4225851531.

Adding to 140140121 its reverse (121041041), we get a palindrome (261181162).

The spelling of 140140121 in words is "one hundred forty million, one hundred forty thousand, one hundred twenty-one".