141921191 has 2 divisors, whose sum is σ = 141921192. Its totient is φ = 141921190.

The previous prime is 141921187. The next prime is 141921211. The reversal of 141921191 is 191129141.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 141921191 - 2² = 141921187 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141921181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70960595 + 70960596.

It is an arithmetic number, because the mean of its divisors is an integer number (70960596).

Almost surely, 2^141921191 is an apocalyptic number.

141921191 is a deficient number, since it is larger than the sum of its proper divisors (1).

141921191 is an equidigital number, since it uses as much as digits as its factorization.

141921191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 29.

The square root of 141921191 is about 11913.0680766963. The cubic root of 141921191 is about 521.6138115779.

The spelling of 141921191 in words is "one hundred forty-one million, nine hundred twenty-one thousand, one hundred ninety-one".