140121321 has 8 divisors (see below), whose sum is σ = 189617184. Its totient is φ = 92019840.

The previous prime is 140121299. The next prime is 140121341. The reversal of 140121321 is 123121041.

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

It is not a de Polignac number, because 140121321 - 2²² = 135927017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140121321.

It is not an unprimeable number, because it can be changed into a prime (140121341) 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, 348360 + ... + 348761.

It is an arithmetic number, because the mean of its divisors is an integer number (23702148).

Almost surely, 2^140121321 is an apocalyptic number.

It is an amenable number.

140121321 is a deficient number, since it is larger than the sum of its proper divisors (49495863).

140121321 is an equidigital number, since it uses as much as digits as its factorization.

140121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697191.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 140121321 is about 11837.2852039646. The cubic root of 140121321 is about 519.3993570172.

Adding to 140121321 its reverse (123121041), we get a palindrome (263242362).

It can be divided in two parts, 1401 and 21321, that added together give a palindrome (22722).

The spelling of 140121321 in words is "one hundred forty million, one hundred twenty-one thousand, three hundred twenty-one".