142448191 has 2 divisors, whose sum is σ = 142448192. Its totient is φ = 142448190.

The previous prime is 142448179. The next prime is 142448239. The reversal of 142448191 is 191844241.

It is a weak prime.

It is an emirp because it is prime and its reverse (191844241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142448191 - 2¹⁵ = 142415423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142448101) 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 as a sum of consecutive naturals, namely, 71224095 + 71224096.

It is an arithmetic number, because the mean of its divisors is an integer number (71224096).

Almost surely, 2^142448191 is an apocalyptic number.

142448191 is a deficient number, since it is larger than the sum of its proper divisors (1).

142448191 is an equidigital number, since it uses as much as digits as its factorization.

142448191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 142448191 is about 11935.1661488226. The cubic root of 142448191 is about 522.2586552034.

The spelling of 142448191 in words is "one hundred forty-two million, four hundred forty-eight thousand, one hundred ninety-one".