142221040991 has 2 divisors, whose sum is σ = 142221040992. Its totient is φ = 142221040990.

The previous prime is 142221040961. The next prime is 142221041009. The reversal of 142221040991 is 199040122241.

142221040991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142221040991 - 2²⁶ = 142153932127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142221040961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71110520495 + 71110520496.

It is an arithmetic number, because the mean of its divisors is an integer number (71110520496).

Almost surely, 2^142221040991 is an apocalyptic number.

142221040991 is a deficient number, since it is larger than the sum of its proper divisors (1).

142221040991 is an equidigital number, since it uses as much as digits as its factorization.

142221040991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 142221040991 in words is "one hundred forty-two billion, two hundred twenty-one million, forty thousand, nine hundred ninety-one".