141640221 has 16 divisors (see below), whose sum is σ = 195068736. Its totient is φ = 91368576.

The previous prime is 141640201. The next prime is 141640223. The reversal of 141640221 is 122046141.

It is a happy number.

It is not a de Polignac number, because 141640221 - 2⁶ = 141640157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141640223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5506 + ... + 17708.

It is an arithmetic number, because the mean of its divisors is an integer number (12191796).

Almost surely, 2^141640221 is an apocalyptic number.

It is an amenable number.

141640221 is a deficient number, since it is larger than the sum of its proper divisors (53428515).

141640221 is a wasteful number, since it uses less digits than its factorization.

141640221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12332.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 141640221 is about 11901.2697221767. The cubic root of 141640221 is about 521.2693606551.

Adding to 141640221 its reverse (122046141), we get a palindrome (263686362).

The spelling of 141640221 in words is "one hundred forty-one million, six hundred forty thousand, two hundred twenty-one".