140235221 has 16 divisors (see below), whose sum is σ = 164296704. Its totient is φ = 117217584.

The previous prime is 140235203. The next prime is 140235229. The reversal of 140235221 is 122532041.

It is a cyclic number.

It is not a de Polignac number, because 140235221 - 2¹⁸ = 139973077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140235193 and 140235202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140235229) 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, 46856 + ... + 49758.

It is an arithmetic number, because the mean of its divisors is an integer number (10268544).

Almost surely, 2^140235221 is an apocalyptic number.

It is an amenable number.

140235221 is a deficient number, since it is larger than the sum of its proper divisors (24061483).

140235221 is a wasteful number, since it uses less digits than its factorization.

140235221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140235221 is about 11842.0952960192. The cubic root of 140235221 is about 519.5400531034.

Adding to 140235221 its reverse (122532041), we get a palindrome (262767262).

The spelling of 140235221 in words is "one hundred forty million, two hundred thirty-five thousand, two hundred twenty-one".