140144121 has 16 divisors (see below), whose sum is σ = 223592320. Its totient is φ = 86242320.

The previous prime is 140144111. The next prime is 140144143. The reversal of 140144121 is 121441041.

It is not a de Polignac number, because 140144121 - 2²⁵ = 106589689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140144094 and 140144103.

It is not an unprimeable number, because it can be changed into a prime (140144111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199285 + ... + 199986.

It is an arithmetic number, because the mean of its divisors is an integer number (13974520).

Almost surely, 2^140144121 is an apocalyptic number.

It is an amenable number.

140144121 is a deficient number, since it is larger than the sum of its proper divisors (83448199).

140144121 is a wasteful number, since it uses less digits than its factorization.

140144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399293 (or 399287 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 140144121 is about 11838.2482234493. The cubic root of 140144121 is about 519.4275270416.

Adding to 140144121 its reverse (121441041), we get a palindrome (261585162).

The spelling of 140144121 in words is "one hundred forty million, one hundred forty-four thousand, one hundred twenty-one".