141172021 has 2 divisors, whose sum is σ = 141172022. Its totient is φ = 141172020.

The previous prime is 141172001. The next prime is 141172037. The reversal of 141172021 is 120271141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 67469796 = 8585^2 + 8214^2 .

It is a cyclic number.

It is not a de Polignac number, because 141172021 - 2⁹ = 141171509 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 141172021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141172001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70586010 + 70586011.

It is an arithmetic number, because the mean of its divisors is an integer number (70586011).

Almost surely, 2^141172021 is an apocalyptic number.

It is an amenable number.

141172021 is a deficient number, since it is larger than the sum of its proper divisors (1).

141172021 is an equidigital number, since it uses as much as digits as its factorization.

141172021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 141172021 is about 11881.5832699182. The cubic root of 141172021 is about 520.6943645507.

The spelling of 141172021 in words is "one hundred forty-one million, one hundred seventy-two thousand, twenty-one".