140132221 has 4 divisors (see below), whose sum is σ = 141492832. Its totient is φ = 138771612.

The previous prime is 140132197. The next prime is 140132243. The reversal of 140132221 is 122231041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122231041 = 883 ⋅138427.

It is a cyclic number.

It is not a de Polignac number, because 140132221 - 2¹⁹ = 139607933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140132195 and 140132204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140132821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680151 + ... + 680356.

It is an arithmetic number, because the mean of its divisors is an integer number (35373208).

Almost surely, 2^140132221 is an apocalyptic number.

It is an amenable number.

140132221 is a deficient number, since it is larger than the sum of its proper divisors (1360611).

140132221 is a wasteful number, since it uses less digits than its factorization.

140132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360610.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140132221 is about 11837.7456046327. The cubic root of 140132221 is about 519.4128246470.

Adding to 140132221 its reverse (122231041), we get a palindrome (262363262).

The spelling of 140132221 in words is "one hundred forty million, one hundred thirty-two thousand, two hundred twenty-one".